Perhaps you should try some spelling variations:
chang chen » chang ch'un, chang chuan, change when
hyoung yan » kyoung yang, hyoung gun, kyoung yun
dang hari » dang hai
yan yuan » yan guan, fang yuan, nan yan
yuan yao » yang yao, yuan kai, yul yao
yao yang » yang yang
yang yi » yang di, yang xi, yang jui
wang » wing, wan, lang

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 hyoung yan yuan yao yang yi ((chang chen) OR (dang hari)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang hyoung yan yuan yao yang yi ((chang chen) or (dang hari)) ;*.