Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yuan kai » yuan kang, yuan fei, tan kai
kai yang » kai fang, yao yang, dan yang
kang hay » eang hay, kang han, kang tae
yan yan » yan yuan, nan yan, wang yan
yang xi » yang di, yang yi, 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 ((yan yan) OR (yang yang)) yuan kai yang xi ((((kang hay) OR (dang hai))) OR (dang hadi)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yan) OR (yang yang)) yuan kai yang xi ((((kang hay) or (dang hai))) or (dang hadi)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan yan) OR (yang yang)) yuan kai yang xi ((((kang hay) or (dang hai))) or (dang hadi)) ;*.