Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
yang yang » wang yang, wang yan
john wong » john song, john bonn
ganga ya » gang yao
yang jui » yang judy, yang di, yang yi
won wong » hon kwong, kwok wong
yang xi » yang di, yang yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ganga ya) or (yang yang)) ((yang jui) or (yang xi)) china zhang ((won wong) or (john wong)) siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ganga ya) OR (yang yang)) ((yang jui) OR (yang xi)) china zhang ((won wong) OR (john wong)) siu ;.
• Adding a wildcard symbol may retrieve word variants: ((ganga ya) or (yang yang)) ((yang jui) or (yang xi)) china zhang ((won wong) or (john wong)) siu ;*.