Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
yong yoon » wong yoon, yong khoon
yoon yuan » woon yuen, yan yuan, yoon kian
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
yi chang » ii chang, ying chang, jin chang
yin yang » ying yang, yi yang, yin fang

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 yuan ((dong yang) OR (yang yang)) ((yi chang) OR (yin yang)) (hai OR hadi) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yong yoon yuan ((dong yang) or (yang yang)) ((yi chang) or (yin yang)) (hai or hadi) ;*.