Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
tang wuhan » wang yuhan
china wang » china yang, china chang, china zhang
yang jin » yang jie, yang jun, ying 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 wuhan china wang ((yang jin) OR (yang xi)) ((tong hui) OR (wang zhi)) ;~.
• Adding a wildcard symbol may retrieve word variants: leung tang wuhan china wang ((yang jin) or (yang xi)) ((tong hui) or (wang zhi)) ;*.