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 chang » ii chang, ying chang, jin chang
yin yang » ying yang, yi yang, yin fang
yi dang » yi gang, yi yang

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 yan yuan tan yang ((((yi dang) OR (yi chang))) OR (yin yang)) (hai OR hadi) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong yan yuan tan yang ((((yi dang) OR (yi chang))) or (yin yang)) (hai or hadi) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yong yan yuan tan yang ((((yi dang) OR (yi chang))) or (yin yang)) (hai or hadi) ;*.