Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
china wang » china yang, china chang, china zhang
tang than » tang chun, tang tang
yang jin » yang jie, yang jun, ying jin
tong hui » wang hui
yang xi » 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 than china wang ((yang jin) OR (((yang xi) OR (yang di)))) ((tong hui) OR (wang hua)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "leung tang than china wang ((yang jin) or (((yang xi) OR (yang di)))) ((tong hui) or (wang hua)) ;~".
• Adding a wildcard symbol may retrieve word variants: leung tang than china wang ((yang jin) or (((yang xi) OR (yang di)))) ((tong hui) or (wang hua)) ;*.