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

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 ya ((hua credit) OR (total credits)) trading risk coping shu ;~.
• Adding a wildcard symbol may retrieve word variants: dong yang ya ((hua credit) or (total credits)) trading risk coping shu ;*.