Perhaps you should try some spelling variations:
wang xiaolin » wang xiaoping, wang xiaodong, wang jianbin
wuhan china » yunnan china
tuan china » can china, taiwan china, yunnan china
daun sang » daun yang, du sang
mind data » wind data, fund data, land data
und data » fund data, wind data, und daten

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang xiaolin ((wuhan china) or (tuan china)) daun sang ((mind data) OR (und data)) haji ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang xiaolin ((wuhan china) OR (tuan china)) daun sang ((mind data) OR (und data)) haji ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang xiaolin ((wuhan china) or (tuan china)) daun sang ((mind data) OR (und data)) haji ;*".