Perhaps you should try some spelling variations:
hua irene » hua ren
oanh tran » anh tran, binh tran
yang john » young john, king john, yang jin
john wong » john song, john bonn
anh tuan » anh tran, dinh tuan
hua chen » jui chen, yu chen, a chen
wong sam » wong sau, wong lai, kong sar

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 ((anh tuan) OR (oanh tran)) ((hua irene) OR (hua chen)) yang john wong sam ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((anh tuan) or (oanh tran)) ((hua irene) or (hua chen)) yang john wong sam ;*.