Perhaps you should try some spelling variations:
teaching cases » teaching case, teaching based, teaching aids
equal credit » dual credit, equity credit, rural credit
cases coping » cases comparing, cases covid, cases during
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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "dong nan ya ((equal credit) OR (a credit)) teaching cases coping shu ;~".
• Adding a wildcard symbol may retrieve word variants: dong nan ya ((equal credit) OR (a credit)) teaching cases coping shu ;*.