How to find pictures of a თახვი (it means beaver) or a Wisent? Please help!!

Wikimedia Commons is the biggest repository of freely licensed media files. It serves a global multi lingual community editing Wikipedia and it has the ambition to serve students as well. When you live in Georgia and you don't speak English, you search for a "თახვი" and this picture is all that you find.

There is a tool for that. Hay's sdsearch does a good job when its interface is localised. Sadly, no such luck for Georgian. Wikimedia produced a tool as well; Special:MediaSearch does a good job. You have to know that the tool exists and when you do, you find that for Dutch it does not work at all. 

It is suggested that you can change the preferences for best result. I fail at getting the results that Special:MediaSearch used to provide. There is no documentation.. Please Help!!

Thanks, GerardM