Perhaps you should try some spelling variations:
trading risk » trading case, trading room, funding risk
trading cost » trading costs, training cost, trading case
hua credit » dual credit, a credit, du credit
dong yang » dong hoang, wang yang, yang yang
yang ya » yang yao, yang yi, yang ka
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: dong yang ya hua credit ((trading risk) or (trading cost)) cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang ya hua credit ((trading risk) OR (trading cost)) cong shu ;.
• Adding a wildcard symbol may retrieve word variants: dong yang ya hua credit ((trading risk) or (trading cost)) cong shu ;*.