The simplest answer would be that very few people would know how to pronounce Grbavica.

However, the renaming adds an almost sordid appeal, certainly one that would pique more of an interest to the casual observer than the original title, remember the excellent South Korean film Oh! Soo-jung , marketed in the West with the incredibly inflammatory and seedy sounding title of Virgin Stripped Bare by Her Bachelors!

Cheers Trev