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
wang yang » wang yan, wang liang, wang yanling
yang y.c » yang yi, yang yao, yang 4.3
y.c dual » 6.2 dual, 7.4 dual, 2.1 dual
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 yang y.c dual credit ((training risk) or (training cost)) cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang y.c dual credit ((training risk) OR (training cost)) cong shu ;.
• Adding a wildcard symbol may retrieve word variants: wang yang y.c dual credit ((training risk) or (training cost)) cong shu ;*.