Perhaps you should try some spelling variations:
credit trading » credit training, credit rating, credit standing
dual credit » rural credit, deals credit, equal credit
risk coping » risk pooling
risk cong » risk among, risk along, risk cost
dong nan » dong yang, dong sin, dong bin
ya dual » a dual, via dual
nan ya » nan yan, nana yaa

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "dong nan ya dual credit trading ((risk cong) OR (risk coping)) shu ;~".
• Adding a wildcard symbol may retrieve word variants: dong nan ya dual credit trading ((risk cong) OR (risk coping)) shu ;*.