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

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