Anomalies in search result page

Hi! Great theme, only one problem with it. My site is in hungarian, that might cause the problem. On my page (http://cobrakai.hu/) when searching, the search results are appended by a lot of "amp;"s. Check it out: http://cobrakai.hu/?s=ameri&submit=Keres%C3%A9s I turned off all plugins and it happens only with this theme. Please help, even if it needs to edit the functions.php file. Thank you