Perhaps you should try some spelling variations:
training course » training courses
training risk » trading risk, training crisis, defining risk
dual credit » rural credit, deals credit, equal credit
wang yang » wang yan, wang liang, wang yanling
yang y » yang yi, yang _, yang 8
y dual » _ dual, a dual, 3 dual

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

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