wip.. inject personSearch results in similaritySearch to avoid duplicates results

error message :
---------------
[Semantical Error] line 0, col 13 near 'p.id) FROM ChillPersonBundle:Person':
Error: 'p' is used outside the scope of its declaration.

Search/PersonSearch.php

@@ -201,7 +201,7 @@ class PersonSearch extends AbstractSearch implements ContainerAwareInterface,
      * @param array $terms
      * @return \Doctrine\ORM\QueryBuilder
      */
-    protected function createQuery(array $terms)
+    public function createQuery(array $terms)
     {
         //get from cache
         $cacheKey = md5(serialize($terms));