Perhaps you should try some spelling variations:
wang daoping » wang xiaoping, wang danning, wang xiaobing
daoping can » mapping can
china data » china update, chinese data
yang mind » yang cindy, yang jin, sang minh
shang hai » dang hai, chang ha, hong hai
yang jun » yang jui, pang jun, yang jin

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 daoping can china data ((yang mind) OR (yang jun)) ((shang kai) OR (shang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang daoping can china data ((yang mind) or (yang jun)) ((shang kai) or (shang hai)) ;*.