Perhaps you should try some spelling variations:
zheng china » hang china, when china, zhejiang china
leong tang » leung tang
tang zheng » wang zheng, fang sheng, fang zhen
china wang » china yang, china chang, china zhang
yang jun » pang jun, yang jin, yang judy
yang jui » yang judy, yang di, yang yi
tong hui » wang hui
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: leong tang zheng china wang ((yang jun) or (((yang xi) OR (yang jui)))) tong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: leong tang zheng china wang ((yang jun) OR (((yang xi) OR (yang jui)))) tong hui ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "leong tang zheng china wang ((yang jun) or (((yang xi) OR (yang jui)))) tong hui ;*".