Perhaps you should try some spelling variations:
zheng china » hang china, when china, zhejiang china
tang zheng » wang zheng, fang sheng, fang zhen
china wang » china yang, china chang, china zhang
yang jun » yang jui, pang jun, yang jin
tong hui » wang hui
yang xi » yang di, yang yi, yang jui
leung » leong, lung, yeung

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: leung tang zheng china wang ((yang jun) OR (yang xi)) tong hui ;~.
• Adding a wildcard symbol may retrieve word variants: leung tang zheng china wang ((yang jun) or (yang xi)) tong hui ;*.