sanki buradan ayrılırsak bir daha hiç Zehra´yı bulamayacakmışım gibi geliyor.

could anyone please explain this sentence. Why bulamayacakmışım? 

why not bulamayacağım? 

Do sanki and the MIŞ tense somehow belong together? What are the typical tenses in sanki sentences?

Sanki = As if, Seems like (~I guess)

Bulamayacakmışım = as if I will not have found

Bulamayacağım = as if I will not find

Both can be used there;

if we leave here I feel like I will not have found Zehra again

if we leave here I feel like I will not find Zehra again

No they don´t belong together

Seems like I am ill = Sanki hastayım (Simple Present Tense)

A: I love paris so much (Parisi çok seviyorum)
B: Dont be funny, as if you went there (Komik olma, sanki oraya gittin) (Past Tense)

The weather is so dark, seems like it´s gonna rain (Future Tense)

Hava çok kapalı, sanki yağmur yağacak

You may use it where you can use "as if/seems like" as long as it has a meaning.

Unfortunately i dont understand difference between them as english is not my native language. But anyway thanks.

"I will not have found" = future perfect tense (theory: http://bit.ly/P16k8R)

"I will not find" = future tense (theory: http://bit.ly/P16RI0 )

What is your native language?

I dont know your native language  is..sometimes is very hard for me, too, to translate from turkish - english- romanian..but, for your example, think like this...

like a desire... you cant be able to find she....

I hope it helps :s

and dont give up from learning turkish..maybe sometimes seems to be very hard..sometimes is very easy..but every time is a pleasure..even you will learn all your life its worth

Sanki buradan ayrılırsak Zehra´yı bir daha hiç bulamayacakmışım gibi geliyor. (I feel as if I will never more be able to find Zehra if we leave here. (direct translation: It is coming as if ...)

-miş gibi (as if/as though ...)

http://www.turkishclass.com/turkish_lesson_270 ( -miş )

http://www.turkishclass.com/turkish_lesson_271 ( -miş )

and one can analyze "bulamayacakmışım" as bul+ama+acak+MIŞ+IM by looking at those knowledges.

... gibi (like ...)

-miş gibi (like ... have/has ...) and this translation takes us to "as though/if". It can be preferably used together with "sanki". It strenghten the meaning to use this pattern with it.

bulamayacakmışım gibi (as if I will not be able to find)

You are grammatically allowed to use it without -miş, people understand. But this way is used in colloquial much more than the writing language. Here comes:

bul+ama(negative able)+acak(future)+ım(personal)-->bulamayacağım (i won´t be able to find)

A-->Zehra´yı bir daha hiç bulamayacağım gibi geliyor.

B-->Zehra´yı bir daha hiç bulamayacakmışım gibi geliyor.

Both of them are correct. But the way B is much more correct than the other one, people prefer it most of times.

My native language is Bosnian.

Of course i won´t give up from Turkish. i remember about 2 years ago when i was begginer, i tought i will never be able to speak, but now i can understand a lot and i can read very good. i will learn turkish forever no metter how hard it is, it´s just most beautiful language in the world.

Thank you mehmet, great lessons.