Perhaps you should try some spelling variations:
wang yao » wang yan, yang yao, gang yao
yao yang » yang yang
yang hua » wang hua, yang hui, ying hua
yang jin » yang jie, yang jun, ying jin
wong sau » wong shiu, wong lai, kong sar
wong sam » wong lai, kong sar, von sam
wong siu » wong shiu, kong siu, wong siew
hua ren » hua chen
yan jiu » yang jie, 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: wang yao yang hua ren ((yan jiu) OR (yang jin)) ((((wong sau) OR (wong sam))) OR (wong siu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yao yang hua ren ((yan jiu) or (yang jin)) ((((wong sau) OR (wong sam))) or (wong siu)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yao yang hua ren ((yan jiu) or (yang jin)) ((((wong sau) OR (wong sam))) or (wong siu)) ;*.