Perhaps you should try some spelling variations:
china yang » china wang, china chang, china zhang
china ying » china during, china daqing, china rising
tang tang » taizong tang
yang jin » yang jie, ying jin, shang jin
yang jun » yang jui, pang jun, yang judy
gong hui » tong hui, tong shui, wang hui
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 tang ((china yang) OR (china ying)) ((yang jin) OR (yang jun)) gong hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "leung tang tang ((china yang) OR (china ying)) ((yang jin) or (yang jun)) gong hui ;~".
• Adding a wildcard symbol may retrieve word variants: leung tang tang ((china yang) OR (china ying)) ((yang jin) or (yang jun)) gong hui ;*.