Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
zhang soon » chang soon
wang yang » wang liang, wang yanling
hsu china » hsu chin, eu china
soon wong » soon siong, john wong, soon ang
tan yang » dan yang, tan ying, tan yong
wong yue » wang yue, hong yu
yang » ryang
yan » ryan

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 ((tan yang) OR (((wang yang) OR (wang yan)))) hsu china zhang soon wong yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((tan yang) or (((wang yang) OR (wang yan)))) hsu china zhang soon wong yue ;~".
• Adding a wildcard symbol may retrieve word variants: lang ((tan yang) or (((wang yang) OR (wang yan)))) hsu china zhang soon wong yue ;*.