Perhaps you should try some spelling variations:
wang oanh » wang yan, dang anh, wang ban
wang yang » wang yan, wang liang, wang yanling
dai irene » david irene
tran dai » tran dat, tran thi, tran nam
yang jun » yang jui, pang jun, yang jin
song ze » song new, song pae
sar » sara, star, saur

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang oanh) OR (wang yang)) tran dai irene yang jun ((song ze) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang oanh) or (wang yang)) tran dai irene yang jun ((song ze) or (kong sar)) ;*.