Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
wang tuan » wang xuan, wang yuhan, wang hua
sang minh » kang minah, anh minh, song min
wong shiu » wong siu, cong shu, song shin
tang min » chang min, yang mind, tang li
kong siu » kong eiu, wong siu, dong sin
wong sam » wong sau, wong lai, kong sar
tuan yu » tian yu, tuan vu, than you
yu chen » yu cheng, yi chen, yulu 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: yuan wang tuan yu chen ((tang min) OR (sang minh)) ((kong siu) OR (((wong shiu) OR (wong sam)))) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan wang tuan yu chen ((tang min) OR (sang minh)) ((kong siu) or (((wong shiu) or (wong sam)))) ;~".
• Adding a wildcard symbol may retrieve word variants: yuan wang tuan yu chen ((tang min) OR (sang minh)) ((kong siu) or (((wong shiu) or (wong sam)))) ;*.