Perhaps you should try some spelling variations:
china ren » china loren, china real, china reza
wan wang » wen wang, yan wang, wang yang
wang can » wang yan, wang ban, wang dan
wong sam » wong sau, wong lai, kong sar
wong siu » wong shiu, kong siu, wong sau
yan jie » yang jie, yang jin, huan jie
yan jiu » yang jie, yang jin, pang jiu

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: wan wang can china ren ((yan jie) OR (yan jiu)) ((wong sam) OR (wong siu)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan wang can china ren ((yan jie) or (yan jiu)) ((wong sam) or (wong siu)) ;*.