Perhaps you should try some spelling variations:
china wang » china yang, china chang, china zhang
dang hung » dang cuong, fung hung, ming hung
hung yang » huang yang, wang yang, yang yang
chua wang » chuan bang, chen wang, chua beng
yang sun » yang jun, yang yun, gang sung
wong sau » wong sam, wong siu, wong shiu
shin » skin, sein, thin

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: dang hung yang ((chua wang) OR (china wang)) yang sun ((wong sau) OR (song shin)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dang hung yang ((chua wang) OR (china wang)) yang sun ((wong sau) or (song shin)) ;~".
• Adding a wildcard symbol may retrieve word variants: dang hung yang ((chua wang) OR (china wang)) yang sun ((wong sau) or (song shin)) ;*.