Perhaps you should try some spelling variations:
china wang » china yang, china chang, china zhang
wang ying » wang yang, wang yong, wang jing
ying yan » ying yang, yang yang, ying bank
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 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 yan yuan tan yang ((yi dang) OR (china wang)) (hai OR hadi) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ying yan yuan tan yang ((yi dang) or (china wang)) (hai or hadi) ;*.