Perhaps you should try some spelling variations:
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
xiaoping 2 » xiaoping _, xiaojing a, xiaoping how
yang yang » wang yang, wang yan
data hari » data sharing
dan yang » daun yang, tan yang, wang yang
tao yang » yao yang, tan yang, xiao yang
und data » fund data, wind data, und daten
2 china » 4 china

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 2 china ((((dan yang) OR (yang yang))) OR (tao yang)) und data hari ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaoping 2 china ((((dan yang) or (yang yang))) or (tao yang)) und data hari ;*.