Perhaps you should try some spelling variations:
rating case » trading case, rating scale, heating case
case coping » career coping, change coping, case company
hua credit » dual credit, a credit, ida credit
coping shu » cong shu
du credit » de credit, 2 credit
dong nan » dong yang, dong sin, dong bin
nan yan » nan ya, wang yan, qian yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong nan yan ((hua credit) OR (du credit)) rating case coping shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong nan yan ((hua credit) OR (du credit)) rating case coping shu ;".
• Adding a wildcard symbol may retrieve word variants: dong nan yan ((hua credit) OR (du credit)) rating case coping shu ;*.