Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
yong yan » yang yang, dong yang, ying yang
yan yuan » yan guan, fang yuan, nan yan
yuan tan » huan t'an, yuan kang, yuan ting
tan yang » dan yang, tan ying, tan yong
yi dang » yi gang, yi chang
yi yang » yin yang, yi gang, yu yang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong yan yuan tan yang ((yi dang) or (yi yang)) (hai or hadi) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong yan yuan tan yang ((yi dang) OR (yi yang)) (hai OR hadi) ;.
• Adding a wildcard symbol may retrieve word variants: wang yong yan yuan tan yang ((yi dang) or (yi yang)) (hai or hadi) ;*.