Perhaps you should try some spelling variations:
credit training » credit trading, credit rationing, credit rating
training costs » trading costs, training courses, training course
dong hoang » hong hong
costs cong » costs along, costs among, costs cost
dong nan » dong yang, dong sin, dong bin
a credit » bad credit
ya a » a a, y a, ye a

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 nan) OR (dong hoang)) ya a credit training costs cong shu ;~.
• Adding a wildcard symbol may retrieve word variants: ((dong nan) or (dong hoang)) ya a credit training costs cong shu ;*.