Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
yong yan » yang yang, dong yang, ying yang
tan yang » dan yang, tan ying, tan yong
yan yun » yan yuan, yang yun, yan kun
yun tan » yun jang
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.

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