Perhaps you should try some spelling variations:
credit training » credit trading, credit rationing, credit rating
training cost » training costs, training course, training courses
dual credit » rural credit, deals credit, equal credit
cost congo » cost control
dong yang » dong hoang, wang yang, yang yang
congo shu » cong shu
ya dual » a dual, via dual
sin » sign, sind, skin

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) or (dong sin)) ya dual credit training cost congo shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (dong sin)) ya dual credit training cost congo shu ;*.