Perhaps you should try some spelling variations:
training risk » trading risk, training crisis, defining risk
training cost » training costs, training course, training courses
equal credit » dual credit, equity credit, rural credit
a equal » _ equal, 6 equal, can equal
yan a » can a, yan _, jan a
wang » wing, wan, lang
cong » congo, long, hong

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

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