Header Items, "Search" Button and Right Column items - where to translate (Russian)?

[Yaro]

I can't find the place where I need to put in the translation of the following items into Russian:

1) Header menu itmes (New products, specials, all products, etc) or even maybe they are translated somewhere universally in some .php file?
2) The button "Поиск" (Search) "dissapeared" with no particular reason, and I don't know where to find it...
3) Items in the right column (banners): Top-Sellers, Reviews, Questions

Here is the screenshot:



The site URL - www . a p t e k a r u s.com

Thanks a lot in advance!!!