diff --git a/include/functions_search.inc.php b/include/functions_search.inc.php
index 85cfeee78..e9d04d09f 100644
--- a/include/functions_search.inc.php
+++ b/include/functions_search.inc.php
@@ -867,18 +867,17 @@ function qsearch_get_images(QExpression $expr, QResults $qsr)
       case 'photo':
         $clauses[] = $file_like;
 
-        if ($inflector!=null && strlen($term)>2
+        $variants = array();
+        if (strlen($term)>2
           && ($expr->stoken_modifiers[$i] & (QST_QUOTED|QST_WILDCARD))==0
-          && strcspn($term, '\'0123456789') == strlen($term)
-          )
+          && strcspn($term, '\'0123456789') == strlen($term) )
         {
-          $variants = array_unique( array_diff( $inflector->get_variants($term), array($term) ) );
+          if ($inflector!=null)
+            $variants = array_unique( array_diff( $inflector->get_variants($term), array($term) ) );
+          $variants = trigger_event('qsearch_get_variants', $variants, $token, $expr);
+          $variants = array_unique( array_diff( $variants, array($term) ) );
           $qsr->variants[$term] = $variants;
         }
-        else
-        {
-          $variants = array();
-        }
 
         if (strlen($term)>3) // default minimum full text index
         {
@@ -930,7 +929,10 @@ function qsearch_get_images(QExpression $expr, QResults $qsr)
       case 'posted':
         $clauses[] = $token->scope->get_sql('date_available', $token);
         break;
-
+      default:
+        // allow plugins to have their own scope with columns added in db by themselves
+        $clauses = trigger_event('qsearch_get_images_sql_scopes', $clauses, $token, $expr);
+        break;
     }
     if (!empty($clauses))
     {
@@ -1216,7 +1218,7 @@ function get_quick_search_results($q, $options)
   $scopes[] = new QNumericRangeScope('hits', array('hit', 'visit', 'visits'));
   $scopes[] = new QNumericRangeScope('score', array('rating'), true);
 
-  $createdDateAliases = array('taken');
+  $createdDateAliases = array('taken', 'shot');
   $postedDateAliases = array('added');
   if ($conf['calendar_datefield'] == 'date_creation')
     $createdDateAliases[] = 'date';
@@ -1225,13 +1227,22 @@ function get_quick_search_results($q, $options)
   $scopes[] = new QDateRangeScope('created', $createdDateAliases, true);
   $scopes[] = new QDateRangeScope('posted', $postedDateAliases);
 
+  // allow plugins to add their own scopes
+  $scopes = trigger_event('qsearch_get_scopes', $scopes);
   $expression = new QExpression($q, $scopes);
+  trigger_action('qsearch_expression_parsed', $expression);
 //var_export($expression);
 
+  if (count($expression->stokens)==0)
+  {
+    return $search_results;
+  }
   $qsr = new QResults;
   qsearch_get_tags($expression, $qsr);
   qsearch_get_images($expression, $qsr);
-//var_export($qsr->all_tags);
+
+  // allow plugins to evaluate their own scopes
+  trigger_action('qsearch_before_eval', $expression, $qsr);
 
   $ids = qsearch_eval($expression, $qsr, $tmp, $search_results['qs']['unmatched_terms']);
 
diff --git a/language/en_UK/help/quick_search.html b/language/en_UK/help/quick_search.html
index 484b96625..283cb6a1e 100644
--- a/language/en_UK/help/quick_search.html
+++ b/language/en_UK/help/quick_search.html
@@ -34,7 +34,7 @@ TD {
 <td>either term<br>
 <q>OR search</q><br>
 </td>
-<td>Add a OR between words.<br>
+<td>Add an OR between words.<br>
 <q>john OR bill</q></td>
 </tr>
 
@@ -63,29 +63,34 @@ TD {
 <table style="border-collapse:collapse;text-align:left">
 
 <tr>
-<td><q>tag:</q>
+<td><q>tag:</q><br>
+<q>tags:</q>
 </td>
 <td>Searches only in tag names without looking at photo titles or descriptions.<br>
 <q>tag:john</q>, <q>tag:(john OR bill)</q></td>
 </tr>
 
 <tr>
-<td><q>photo:</q>
+<td><q>photo:</q><br>
+<q>photos:</q>
 </td>
-<td></td>
+<td>Searches only for photos with the given words in title or description.<br>
+<q>photo:John</q></td>
 </tr>
 
 <tr>
 <td><q>file:</q>
 </td>
-<td>Searches by file name.</td>
+<td>Searches by file name.<br>
+<q>file:DSC_</q></td>
 </tr>
 
 <tr>
 <td><q>created:</q><br>
 <q>taken:</q>
+<q>shot:</q>
 </td>
-<td>Searches photos by taken date<br>
+<td>Searches photos by taken date.<br>
 <q>taken:2003</q> photos taken in 2003<br>
 <q>taken:20035</q>,<q>taken:2003-5</q>,<q>taken:2003-05</q> photos from may 2003<br>
 <q>taken:2003..2008</q> photos from 2003 to 2008<br>
@@ -96,24 +101,29 @@ TD {
 <tr>
 <td><q>posted:</q>
 </td>
-<td></td>
+<td>Searches photos by posted date.</td>
 </tr>
 
 <tr>
 <td><q>width:</q><br>
 <q>height:</q>
 </td>
-<td></td>
+<td>Searches photos with a given width or height.</td>
 </tr>
 <tr>
 <td><q>size:</q>
 </td>
-<td></td>
+<td>Searches photos by size in pixels<br>
+<q>size:5m</q> returns photos of 5 megapixels<br>
+<q>size:>12m</q> returns photos of 12 megapixels or more<br></td>
 </tr>
 <tr>
 <td><q>ratio:</q>
 </td>
-<td></td>
+<td>Searches photos by width/height ratio.<br>
+<q>ratio:3/4 OR ratio:4/3</q> finds photos from compact cameras in portrait or landscape modes
+<q>ratio:>16/9</q> finds panoramas
+</td>
 </tr>
 <tr>
 <td><q>hits:</q>
@@ -121,9 +131,16 @@ TD {
 <td></td>
 </tr>
 <tr>
-<td><q>score:</q>
+<td><q>score:</q><br>
+<q>rating:</q>
 </td>
-<td></td>
+<td>Hint: <q>score:*</q> will give you all photos with at least one vote. <q>score:</q> will give you photos without votes.</td>
+</tr>
+<tr>
+<td><q>filesize:</q>
+</td>
+<td>Searches photos by file size<br>
+<q>filesize:1m..10m</q> finds files between 1MB and 10MB.</td>
 </tr>
 
 </table>
\ No newline at end of file