Perhaps you should try some spelling variations:
yong yang » dong yang, ying yang, kyoung yang
yang yang » wang yang, wang yan
dang hari » dang hai
wing tan » wing ian, liang tan, hong tan
tan yang » dan yang, tan ying, tan yong
kang hay » eang hay, kang han, dang hai
yang wu » yang du, yang mu, yang jui

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 yang) OR (yang yang)) wing tan yang wu ((kang hay) OR (dang hari)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yong yang) or (yang yang)) wing tan yang wu ((kang hay) or (dang hari)) ;*.