Perhaps you should try some spelling variations:
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
chan ming » kian ming, chan eng, chan kang
chan fong » chew fong, chan eng, chan kang
hua chen » jui chen, a chen, hua ren
wong siu » wong shiu, kong siu, wong sau
yu chen » yu cheng, yi chen, yulu chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) OR (wang yang)) ka ((hua chen) or (yu chen)) ((chan ming) or (chan fong)) wong siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang yang)) ka ((hua chen) OR (yu chen)) ((chan ming) OR (chan fong)) wong siu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) OR (wang yang)) ka ((hua chen) or (yu chen)) ((chan ming) or (chan fong)) wong siu ;".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) OR (wang yang)) ka ((hua chen) or (yu chen)) ((chan ming) or (chan fong)) wong siu ;*.