Perhaps you should try some spelling variations:
wang ying » wang yang, wang yong, wang jing
ying yang » yang yang, yin yang, ying chang
yang yuan » fang yuan, yan yuan, yang yun
chin fang » chin chang, china wang, china yang
yuan tan » huan t'an, yuan kang, yuan ting
tan yang » dan yang, tan 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 ying yang yuan tan yang ((yi dang) OR (chin fang)) (hai OR hadi) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ying yang yuan tan yang ((yi dang) or (chin fang)) (hai or hadi) ;*.