AJAX-search in Module is not stable with Cyrillic alphabet. I can find ads by word(not every!) of desc, but It is not works for head. I am displeased.
Before complaining you could ask for support in our forum.
Cyrillic alphabet is not usual. Our extensions are released in four languages. We are not perfects and we can not release our extensions in all word languages.
If you asked we would help you to translate the extension.