Perhaps you should try some spelling variations:
credit making » credit rating, credit ratings, credit trading
dual credit » rural credit, deals credit, equal credit
case coping » career coping, change coping, case company
coping shu » cong shu
yang yala » yang yang, yang all, yang dali
yang yao » yang yang, wang yan, yang yi

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: "wang ((yang yala) OR (yang yao)) dual credit making case coping shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yang yala) OR (yang yao)) dual credit making case coping shu ;*.