Perhaps you should try some spelling variations:
sudan chen » sudan ch
yan liang » yang liang, wang liang, you liang
dan chen » don chen, dan china, jean chen
yang jie » yang jin, yang jui, yang yi
wong sau » wong sam, wong siu, wong shiu
yang xi » yang yi, yang jui
wang » wing, wan, lang

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 yan liang ((dan chen) OR (sudan chen)) ((((yang xi) OR (yang di))) OR (yang jie)) wong sau ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan liang ((dan chen) OR (sudan chen)) ((((yang xi) or (yang di))) or (yang jie)) wong sau ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan liang ((dan chen) OR (sudan chen)) ((((yang xi) or (yang di))) or (yang jie)) wong sau ;*.