Perhaps you should try some spelling variations:
yong yoon » wong yoon, yong khoon
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
kai yang » yao yang, dan yang, hui yang
kai fang » cai fang, kai fa, kai hong
xi chang » ii chang, xi cheng, xi zhang
chang ha » chang mae

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: wang ((yong yoon) OR (((dong yang) OR (yang yang)))) yuan ((kai yang) OR (kai fang)) xi chang ha ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yong yoon) or (((dong yang) or (yang yang)))) yuan ((kai yang) OR (kai fang)) xi chang ha ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yong yoon) or (((dong yang) or (yang yang)))) yuan ((kai yang) OR (kai fang)) xi chang ha ;*.