Perhaps you should try some spelling variations:
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
xiaoping than » xiaoping how, xiaoping shi
than china » tuan china, han china, wuhan china
dong yang » dong hoang, wang yang, yang yang
jie zhang » jia zhang, li zhang, bin zhang
zhang hai » zhang dai, shang hai, zhang han
von yang » von wang, von langs, dan 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 xiaoping than china ((von yang) OR (dong yang)) jie zhang hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaoping than china ((von yang) or (dong yang)) jie zhang hai ;*.