Index: wp-includes/query.php
===================================================================
--- wp-includes/query.php	(revision 17637)
+++ wp-includes/query.php	(working copy)
@@ -2155,9 +2155,6 @@
 				$search .= "{$searchand}(($wpdb->posts.post_title LIKE '{$n}{$term}{$n}') OR ($wpdb->posts.post_content LIKE '{$n}{$term}{$n}'))";
 				$searchand = ' AND ';
 			}
-			$term = esc_sql( like_escape( $q['s'] ) );
-			if ( empty($q['sentence']) && count($q['search_terms']) > 1 && $q['search_terms'][0] != $q['s'] )
-				$search .= " OR ($wpdb->posts.post_title LIKE '{$n}{$term}{$n}') OR ($wpdb->posts.post_content LIKE '{$n}{$term}{$n}')";
 
 			if ( !empty($search) ) {
 				$search = " AND ({$search}) ";