Perhaps you should try some spelling variations:
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
part china » parks china, east china, market china
hurt china » out china, must china
messy data » mesh data
minh data » mind data, fish data, mesh data
dan yang » daun yang, tan yang, wang 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 ((part china) OR (hurt china)) dan yang ((minh data) OR (messy data)) hari ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaoping ((part china) or (hurt china)) dan yang ((minh data) or (messy data)) hari ;*.