Perhaps you should try some spelling variations:
credit training » credit trading, credit rationing, credit rating
training cost » training costs, training course, training courses
cost coping » post coping, port coping, cost computing
yang rural » yang rudai, buying rural, change rural
coping shu » cong shu
wang yang » wang yan, wang liang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (wang yanling)) yang rural credit training cost coping shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (wang yanling)) yang rural credit training cost coping shu ;*.