Perhaps you should try some spelling variations:
china chang » chin chang, china zhang, china changqi
china wang » china yang, china zhang, china won
tang tang » taizong tang
fang jie » yang jie, tang jie, fang ke
gong hui » tong hui, tong shui, gong si
wang hui » wang hua, wang zhi, wang wei
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 wang) OR (china chang)) fang jie ((gong hui) OR (wang hui)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "leung tang tang ((china wang) OR (china chang)) fang jie ((gong hui) or (wang hui)) ;~".
• Adding a wildcard symbol may retrieve word variants: leung tang tang ((china wang) OR (china chang)) fang jie ((gong hui) or (wang hui)) ;*.