Perhaps you should try some spelling variations:
chen yang » chen rong
john song » john wong, john bonn, john ngosong
wang ban » wang yan, wang dan, wang yang
ban tran » binh tran, oanh tran, anh tran
tran hua » tan hua, tuan hua, tran duc
ren yang » ren yan, dan yang, pei yang
song sam » wong sam, kong sar, song pae

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ban tran hua ((ren yang) or (chen yang)) john song sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ban tran hua ((ren yang) OR (chen yang)) john song sam ;.
• Adding a wildcard symbol may retrieve word variants: wang ban tran hua ((ren yang) or (chen yang)) john song sam ;*.