Does somebody can explain this sentence to me?
thanks very much

This is a saying, meaning "I'm lost without you" (free translatıon).

The long form would be:
Ben sensiz ne eyliyeyim. (formally:what can I do wıthout you). This is the question form of a sentence but its not a question of course.
The very 'eylemek' (to do) is replaced wıth the verb 'yapmak' nowadays.

Though the very eylemek is not so common anymore in daily life you can come across to it in some old literature. These days to express the same feeling a turk would say:

Sensiz ne yaparım. It would have the same meaning.

This is my first post here. Please feel free to correct me if I'm using the incorrect terms of grammar.

sorry many typos above. I meant verb instead very twice somewhere above.

thanks very much!