Perhaps you should try some spelling variations:
teaching cases » teaching case, teaching based, teaching aids
cases coping » cases comparing, cases covid, cases during
ida credit » ida credits, de credit, du credit
coping shu » cong shu
dong nan » dong yang, dong sin, dong bin
a credit » bad credit
nan ya » nan yan, nana yaa

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 ya ((ida credit) or (a credit)) teaching cases coping shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong nan ya ((ida credit) OR (a credit)) teaching cases coping shu ;*.