Perhaps you should try some spelling variations:
ying yang » yang yang, yin yang, ying chang
wang yong » wang yang, wang hyoung, wang yan
yong yan » yang yang, dong yang, yong yoon
yan yuan » yan guan, fang yuan, nan yan
tan yang » dan yang, tan yong, tao yang
tan ying » fan ying, ran ying, tan yong
yi dang » yi gang, yi yang, yi chang

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) OR (tan ying)) ((yi dang) OR (ying yang)) (hai OR hadi) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yong yan yuan ((tan yang) or (tan ying)) ((yi dang) or (ying yang)) (hai or hadi) ;*.