Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
chang won » chang soon, chang min, chang you
chang ann » chang min, chang yun, change annex
zhong zhi » zhang zhi, hong ghi, zhong tai
yang xi » yang di, yang yi, yang jui
hong yu » wong yue
xi han » ti han, xi zhang
wang » wing, 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 OR wan) yang yang xi han ((chang won) OR (chang ann)) ((zhong zhi) OR (hong yu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wan) yang yang xi han ((chang won) OR (chang ann)) ((zhong zhi) or (hong yu)) ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or wan) yang yang xi han ((chang won) OR (chang ann)) ((zhong zhi) or (hong yu)) ;*.