Perhaps you should try some spelling variations:
training risk » training visit, training work, training firm
training cost » training costs, training course, trading costs
equal credit » dual credit, rural credit, total credit
trading risk » trading case, trading cost, sharing risk
y equal » _ equal
yan y » yang y
wang » wing, wan, lang
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 yan y equal credit ((((training risk) OR (trading risk))) or (training cost)) cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan y equal credit ((((training risk) OR (trading risk))) OR (training cost)) cong shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan y equal credit ((((training risk) OR (trading risk))) or (training cost)) cong shu ;".
• Adding a wildcard symbol may retrieve word variants: wang yan y equal credit ((((training risk) OR (trading risk))) or (training cost)) cong shu ;*.