Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
kwei china » wbi china
yang kwei » yong kwek
yang yang » wang yang, wang yan
zhang tan » zhang tian, zhang fan, zhang yan
gang yao » yang yao, wang yan, sang yoo
hong g » hong ng, hong w, hong 7

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (((ganga ya) OR (gang yao)))) yang kwei china zhang tan hong g ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (((ganga ya) OR (gang yao)))) yang kwei china zhang tan hong g ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (((ganga ya) OR (gang yao)))) yang kwei china zhang tan hong g ;*".