Perhaps you should try some spelling variations:
credit training » credit trading, credit rationing, credit rating
cost computing » soft computing, cloud computing, trust computing
hua credit » dual credit, a credit, du credit
dong nana » dong nan, dong yang
nana yama » nana yaa
yama hua » ya hua

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong nana yama hua credit training ((cost computing) or (cost housing)) shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong nana yama hua credit training ((cost computing) OR (cost housing)) shu ;*.