Perhaps you should try some spelling variations:
total credits » total credit, tax credits
trading risk » trading case, trading room, funding risk
pooling shu » pooling sub
hua credit » dual credit, a credit, du credit
dong yang » dong hoang, wang yang, yang yang
yang ka » yang fan, yang yao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang ka ((hua credit) OR (total credits)) trading risk pooling shu ;~.
• Adding a wildcard symbol may retrieve word variants: dong yang ka ((hua credit) or (total credits)) trading risk pooling shu ;*.