Perhaps you should try some spelling variations:
chin chang » china chang, chain change, china zhang
yang yang » wang yang, wang yan
john wong » john song, john bonn
gang yao » yang yao, wang yan, ganga ya
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: ((gang yao) or (yang yang)) ((yang jui) or (yang xi)) chin chang ((won wong) OR (john wong)) siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((gang yao) OR (yang yang)) ((yang jui) OR (yang xi)) chin chang ((won wong) OR (john wong)) siu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((gang yao) or (yang yang)) ((yang jui) or (yang xi)) chin chang ((won wong) OR (john wong)) siu ;".
• Adding a wildcard symbol may retrieve word variants: ((gang yao) or (yang yang)) ((yang jui) or (yang xi)) chin chang ((won wong) OR (john wong)) siu ;*.