Perhaps you should try some spelling variations:
cohen ryan » john ryan
dang binh » dann bin, dong bin, dang anh
binh tuan » binh thuan, binh tran, dinh tuan
ryan john » brian john, tian john
vu cohen » von cohen, m cohen, _ cohen
tuan vu » thanh vu, tuan hua
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: dang binh tuan vu cohen ryan john ((wong lai) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: dang binh tuan vu cohen ryan john ((wong lai) or (kong sar)) ;*.