Perhaps you should try some spelling variations:
training course » training courses
training risk » trading risk, training crisis, defining risk
equal credit » dual credit, equity credit, rural credit
long shu » cong shu, tong shui, long du
wan yan » wang yan, nan yan, wai yan
y equal » _ equal, 6 equal, e equals
yan y » yang y, yan _, yan 4

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

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