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
wang liang » wang yang
long shu » cong shu, tong shui, long du
y equal » _ equal, 6 equal, e equals

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

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