merhaba.

can you explain to me, what is difference?

when can I use ne olur?

çok teşekkür ederim..

http://www.turkishclass.com/forumTitle_42436

thank you very much ! çok teşekkür ederim

"Ne olur" is stronger word  than "please" and it is more like pleading /begging expression.

saol tunci. I thought so.... now I am sure.

In songs I am hearing NE OLUR only

Literally translated ´ne olur´ is something like ´whatever happens´. You can hear that sounds more pressing than ´lütfen´.