diff --git a/libretroshare/src/retroshare/rsexpr.h b/libretroshare/src/retroshare/rsexpr.h
index 4cf9e7983..771c215fc 100644
--- a/libretroshare/src/retroshare/rsexpr.h
+++ b/libretroshare/src/retroshare/rsexpr.h
@@ -28,6 +28,7 @@
 #include <string>
 #include <list>
 #include <stdint.h>
+#include "util/rsprint.h"
 #include "retroshare/rstypes.h"
 
 /******************************************************************************************
@@ -127,6 +128,7 @@ public:
     virtual ~Expression() {};
 
     virtual void linearize(LinearizedExpression& e) const = 0 ;
+	virtual std::string toStdString() const = 0 ;
 };
 
 class CompoundExpression : public Expression 
@@ -155,6 +157,18 @@ public:
         delete Rexp;
     }
 
+	virtual std::string toStdString() const
+	{
+		switch(Op)
+		{
+		case AndOp: return "(" + Lexp->toStdString() + ") AND (" + Rexp->toStdString() +")" ;
+		case  OrOp: return "(" + Lexp->toStdString() + ") OR (" + Rexp->toStdString() +")" ;
+		case XorOp: return "(" + Lexp->toStdString() + ") XOR (" + Rexp->toStdString() +")" ;
+		default:
+			return "" ;
+		}
+	}
+
     virtual void linearize(LinearizedExpression& e) const ;
 private:
     Expression *Lexp;
@@ -169,6 +183,7 @@ public:
     StringExpression(enum StringOperator op, std::list<std::string> &t, bool ic): Op(op),terms(t), IgnoreCase(ic){}
 
     virtual void linearize(LinearizedExpression& e) const ;
+	virtual std::string toStdString(const std::string& varstr) const;
 protected:
     bool evalStr(const std::string &str);
 
@@ -184,6 +199,7 @@ public:
     RelExpression(enum RelOperator op, T lv, T hv): Op(op), LowerValue(lv), HigherValue(hv) {}
 
     virtual void linearize(LinearizedExpression& e) const ;
+	virtual std::string toStdString(const std::string& typestr) const;
 protected:
     bool evalRel(T val);
 
@@ -214,6 +230,22 @@ bool RelExpression<T>::evalRel(T val) {
     }
 }
 
+template <class T>
+std::string RelExpression<T>::toStdString(const std::string& typestr) const
+{
+	std::string LowerValueStr = RsUtil::NumberToString(LowerValue) ;
+
+    switch (Op) {
+    case Equals:		 return typestr + " = " + LowerValueStr ;
+    case GreaterEquals:  return typestr + " <= "+ LowerValueStr ;
+    case Greater:		 return typestr + " < " + LowerValueStr ;
+    case SmallerEquals:  return typestr + " >= "+ LowerValueStr ;
+    case Smaller:		 return typestr + " > " + LowerValueStr ;
+    case InRange:		 return LowerValueStr + " <= " + typestr + " <= " + RsUtil::NumberToString(HigherValue) ;
+    default:
+        return "";
+    }
+}
 
 /******************************************************************************************
 Binary Predicate for Case Insensitive search 
@@ -245,6 +277,8 @@ public:
         StringExpression(op,t,ic) {}
     bool eval(const ExpFileEntry& file);
 
+	virtual std::string toStdString() const { return StringExpression::toStdString("NAME"); }
+
     virtual void linearize(LinearizedExpression& e) const
     {
         e._tokens.push_back(LinearizedExpression::EXPR_NAME) ;
@@ -258,6 +292,8 @@ public:
         StringExpression(op,t,ic) {}
     bool eval(const ExpFileEntry& file);
 
+	virtual std::string toStdString()const { return StringExpression::toStdString("PATH"); }
+
     virtual void linearize(LinearizedExpression& e) const
     {
         e._tokens.push_back(LinearizedExpression::EXPR_PATH) ;
@@ -271,6 +307,8 @@ public:
         StringExpression(op,t,ic) {}
     bool eval(const ExpFileEntry& file);
 
+	virtual std::string toStdString()const { return StringExpression::toStdString("EXTENSION"); }
+
     virtual void linearize(LinearizedExpression& e) const
     {
         e._tokens.push_back(LinearizedExpression::EXPR_EXT) ;
@@ -284,6 +322,8 @@ public:
         StringExpression(op,t, true) {}
     bool eval(const ExpFileEntry& file);
 
+	virtual std::string toStdString() const { return StringExpression::toStdString("HASH"); }
+
     virtual void linearize(LinearizedExpression& e) const
     {
         e._tokens.push_back(LinearizedExpression::EXPR_HASH) ;
@@ -304,6 +344,8 @@ public:
         RelExpression<int>(op,lv,hv) {}
     bool eval(const ExpFileEntry& file);
 
+	virtual std::string toStdString() const { return RelExpression<int>::toStdString("DATE"); }
+
     virtual void linearize(LinearizedExpression& e) const
     {
         e._tokens.push_back(LinearizedExpression::EXPR_DATE) ;
@@ -319,6 +361,8 @@ public:
         RelExpression<int>(op,lv,hv) {}
     bool eval(const ExpFileEntry& file);
 
+	virtual std::string toStdString() const { return RelExpression<int>::toStdString("SIZE"); }
+
     virtual void linearize(LinearizedExpression& e) const
     {
         e._tokens.push_back(LinearizedExpression::EXPR_SIZE) ;
@@ -334,6 +378,8 @@ public:
         RelExpression<int>(op,lv,hv) {}
     bool eval(const ExpFileEntry& file);
 
+	virtual std::string toStdString() const { return RelExpression<int>::toStdString("SIZE"); }
+
     virtual void linearize(LinearizedExpression& e) const
     {
         e._tokens.push_back(LinearizedExpression::EXPR_SIZE_MB) ;
@@ -348,6 +394,8 @@ public:
     PopExpression(const LinearizedExpression& e) ;
     bool eval(const ExpFileEntry& file);
 
+	virtual std::string toStdString() const { return RelExpression<int>::toStdString("POPULARITY"); }
+
     virtual void linearize(LinearizedExpression& e) const
     {
         e._tokens.push_back(LinearizedExpression::EXPR_POP) ;
diff --git a/libretroshare/src/turtle/p3turtle.cc b/libretroshare/src/turtle/p3turtle.cc
index 9fe58915b..3271044a4 100644
--- a/libretroshare/src/turtle/p3turtle.cc
+++ b/libretroshare/src/turtle/p3turtle.cc
@@ -1785,6 +1785,10 @@ void RsTurtleRegExpSearchRequestItem::performLocalSearch(std::list<TurtleFileInf
 	if(exp == NULL)
 		return ;
 
+#ifdef P3TURTLE_DEBUG
+	std::cerr << "Local search on exp: " << exp->toStdString() << std::endl;
+#endif
+
 	// now, search!
     rsFiles->SearchBoolExp(exp,initialResults,RS_FILE_HINTS_LOCAL | RS_FILE_HINTS_SEARCHABLE,PeerId());
 
diff --git a/libretroshare/src/util/rsexpr.cc b/libretroshare/src/util/rsexpr.cc
index 7e35a1873..9a6de7076 100644
--- a/libretroshare/src/util/rsexpr.cc
+++ b/libretroshare/src/util/rsexpr.cc
@@ -128,6 +128,32 @@ static bool StrContains( const std::string & str1, const std::string & str2,
 }
 
 
+std::string StringExpression::toStdString(const std::string& varstr) const
+{
+	std::string strlist ;
+	for (auto iter = terms.begin(); iter != terms.end(); ++iter )
+		strlist += *iter + ",";
+
+	if(!strlist.empty())
+		strlist.pop_back();	// pops the last ","
+
+	switch(Op)
+	{
+	case ContainsAllStrings:  return varstr + " CONTAINS ALL "+strlist ;
+	case ContainsAnyStrings:  if(terms.size() == 1)
+			return varstr + " CONTAINS "+strlist ;
+		else
+			return varstr + " CONTAINS ONE OF "+strlist ;
+	case EqualsString:  	  if(terms.size() == 1)
+			return varstr + " IS "+strlist ;
+		else
+			return varstr + " IS ONE OF "+strlist ;
+
+	default:
+		return "" ;
+	}
+}
+
 bool StringExpression :: evalStr ( const std::string &str ){
     std::list<std::string>::iterator iter;
     switch (Op) {