message when query returns 0 results

cps/templates/search.html

@@ -5,6 +5,7 @@
     {% if entries|length < 1 %}
       <h2>{{_('No Results Found')}}</h2>
       <p>{{_('Search Term:')}} {{adv_searchterm}}</p>
+        <p>{{_('Words smaller than 3 letters are not considered')}}</p>
     {% else %}
       <h2>{{result_count}} {{_('Results for:')}} {{adv_searchterm}}</h2>
       {% if current_user.is_authenticated %}