Perhaps you should try some spelling variations:
wan wang » wen wang, yan wang, wang yang
wang dan » wang yan, wang ban, wang yidan
wong sam » wong lai, kong sar, von sam
wong sau » wong shiu, wong lai, kong sar
wong siu » wong shiu, kong siu, wong siew
dan hua » tan hua, wang hua, dong hua
hua ren » hua chen
yan jiu » yang jie, yang jin, pang jiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan wang dan hua ren yan jiu ((((wong sam) OR (wong sau))) or (wong siu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan wang dan hua ren yan jiu ((((wong sam) OR (wong sau))) OR (wong siu)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan wang dan hua ren yan jiu ((((wong sam) OR (wong sau))) or (wong siu)) ;*".