I saw several mods , that looks good, but they are at different language. If i install - i cannot read anything. Now, most of them are Russian mods and i did not find anything, that can be used to translate them. I do know that language and my computer have that language installed, but have no idea how to translate them. Or how to make my FNV game to be like multi- language game:)
Any1 know how to do that?

If you install russian mods, their going to be in russian. It's just the way it is, you have to live with it

If you wanted to you would have to do some translating on your own by using Google Translator or a similar app. Then use Fnvedit to change the language from Russian to English or whatever language you want. It will take time but it's doable.
I've had to tweak languages from mods that the mod author left in by accident when English isn't their first language. Like one time I noticed Doc Mitchell's house was changed to French and I had to change it back manually with Fnvedit. Great Tool.

Hmm, i do use Fnvedit, didn't notice, that i can do that in there. As for weapon and armor and similar ... have to try. From Russian no need translator, just language do not appear in game. Ty will try. Will not work for quest mods but for others....