Perhaps you should try some spelling variations:
training risk » trading risk, training crisis, defining risk
training cost » training costs, training course, training courses
dual credit » rural credit, deals credit, equal credit
dong yang » dong hoang, wang yang, yang yang
yang yao » yang yang, wang yan, yang yi
yao dual » a dual

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

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