Perhaps you should try some spelling variations:
teaching cases » teaching case, teaching aids, teaching cross
teaching based » teaching case, teaching aid
comparing lsda » comparing india, comparing body, comparing d
equal credit » dual credit, equity credit, rural credit
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: dong nan ya ((equal credit) OR (a credit)) ((teaching cases) OR (teaching based)) comparing lsda ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong nan ya ((equal credit) or (a credit)) ((teaching cases) OR (teaching based)) comparing lsda ;~".
• Adding a wildcard symbol may retrieve word variants: dong nan ya ((equal credit) or (a credit)) ((teaching cases) OR (teaching based)) comparing lsda ;*.