Perhaps you should try some spelling variations:
china chang » chin chang, china zhang, china changqi
chang soon » chang won, chin soon, chang gordon
hua china » eu china, a china, era china
yang yang » wang yang
soon wong » soon siong, john wong, soon ang
yan yang » yao yang, dan yang, tan yang
wong yue » wang yue, hong yu

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: lang ((yan yang) OR (((yang yang) OR (wang yan)))) hua china chang soon wong yue ;~.
• Adding a wildcard symbol may retrieve word variants: lang ((yan yang) or (((yang yang) or (wang yan)))) hua china chang soon wong yue ;*.