Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
wang liang » wang yang
liang judy » yang judy
wang wang » wang yang, wang yan, wang yong
tan yong » tan hong, tan yang, tan ying
tan kong » tan hong
kim song » kim young, kim eung

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 wang liang judy ((tan yong) OR (tan kong)) ((china zhang) OR (kim song)) shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang wang liang judy ((tan yong) or (tan kong)) ((china zhang) or (kim song)) shu ;*.