Perhaps you should try some spelling variations:
mining planning » training planning, planning planning, meetings planning
planning spain » planning chain, planning gain, planning space
china pim » china peo, china pt
yang jie » yang jin, yang di, yang yi
yang jui » yang judy, yang di, yang yi
yang xi » yang di, yang yi
tan » than

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: mining planning spain china pim ((((yang jie) OR (yang xi))) OR (yang jui)) hong tan ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "mining planning spain china pim ((((yang jie) OR (yang xi))) or (yang jui)) hong tan ;~".
• Adding a wildcard symbol may retrieve word variants: mining planning spain china pim ((((yang jie) OR (yang xi))) or (yang jui)) hong tan ;*.