--- a/src/pyams_content/features/search/interfaces.py	Tue Jan 15 09:58:09 2019 +0100
+++ b/src/pyams_content/features/search/interfaces.py	Wed Jan 16 15:55:23 2019 +0100
@@ -52,7 +52,9 @@
     """Search folder interface"""
 
     order_by = Choice(title=_("Order by"),
-                      description=_("Property to use to sort results"),
+                      description=_("Property to use to sort results; publication date can be different from first "
+                                    "publication date for contents which have been retired and re-published with a "
+                                    "different publication date"),
                       vocabulary=USER_VIEW_ORDER_VOCABULARY,
                       required=False,
                       default=RELEVANCE_ORDER)