Perhaps you should try some spelling variations:
mining business » winning business, gaining business, linking business
business doing » business dating, business during, business using
wang dong » wang hong, wang jing, wang ning
wang yong » wang hyoung, wang yan, wang shiyong
wang yang » wang yan, wang liang, wang yanling
doing und » ding und, doing un, ring und

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang dong) or (((wang yong) OR (wang yang)))) hwang 2 data mining business doing und ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang dong) OR (((wang yong) OR (wang yang)))) hwang 2 data mining business doing und ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang dong) or (((wang yong) OR (wang yang)))) hwang 2 data mining business doing und ;".
• Adding a wildcard symbol may retrieve word variants: ((wang dong) or (((wang yong) OR (wang yang)))) hwang 2 data mining business doing und ;*.