Perhaps you should try some spelling variations:
xiaoping tan » xiaoyang tang, xiaoping _, xiaoping how
xiaojing a » xiaoping _, xiaojing part
china won » china women, china wang, china who
won yang » wang yang, dong yang, dan yang
yang jin » yang jie, yang jun, ying jin
jin data » main data, own data, von data
deng » den, eng, dung

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: deng ((xiaoping tan) OR (xiaojing a)) china won yang jin data (hai OR hari) ;~.
• Adding a wildcard symbol may retrieve word variants: deng ((xiaoping tan) or (xiaojing a)) china won yang jin data (hai or hari) ;*.