Perhaps you should try some spelling variations:
training course » training courses
equal credit » dual credit, equity credit, rural credit
trading risk » trading case, trading room, funding risk
wang jia » wang qiao, wang jing, wang hua
yi equal » _ equal, 6 equal, so equal
gong hui » tong hui, tong shui, wang hui

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang jia yi equal credit ((trading risk) or (training course)) gong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang jia yi equal credit ((trading risk) OR (training course)) gong hui ;.
• Adding a wildcard symbol may retrieve word variants: wang jia yi equal credit ((trading risk) or (training course)) gong hui ;*.