Perhaps you should try some spelling variations:
training course » training courses
trading risk » trading case, trading room, funding risk
dual credit » rural credit, deals credit, equal credit
hong shu » cong shu, tong shui, wong shiu
y dual » _ dual, a dual, 3 dual
yan y » yang y, yan _, yan 4
wang » wing, wan, lang

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

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