Perhaps you should try some spelling variations:
mining planning » training planning, planning planning, meetings planning
chain change » can change, than change, champion change
chain china » spain china, chain coping, hainan china
yang jin » yang jie, yang jun, ying jin
yang jui » yang judy, yang di, yang xi
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 ((chain china) OR (chain change)) pim ((yang jin) OR (yang jui)) hong tan ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "mining planning ((chain china) OR (chain change)) pim ((yang jin) or (yang jui)) hong tan ;~".
• Adding a wildcard symbol may retrieve word variants: mining planning ((chain china) OR (chain change)) pim ((yang jin) or (yang jui)) hong tan ;*.