turkce dersiniz nasil....bless you! This is when someone sneezes. I have been told its cok yasa but is that correct?

Correct !

Yes it is "çok yaşa" (Live long). But nowadays some people says: "İyi yaşa!" (Live well). Maybe they don´t want other person to live long or they just want to change the fashion,  I don´t know

thank you for your replies. i was trying to work out the phrase but it didnt seem to make sense. Now i understand.