QUOTE (Tav6 @ Dec 3 2009, 09:04 PM)

lol i doubt she is full blood khmer
full blood khmer dont have truong as their last name

It's a Vietnamized version of a Khmer last name. Believe it or not, all minorities of Vietnam carry Vietnamese last names, whether they're cham, khmer, or montagnard. Carrying Vietnamese last name doesn't mean they have Viet blood.
Ethnic Khmer girl named Lâm Thu Hằng - Her last name is Lâm. Do you think she's mixed with Viet or Chinese? I don't think so.