Perhaps you should try some spelling variations:
total credit » formal credit, rural credit
dual credit » rural credit, deals credit, equal credit
costs along » costs among, costs longer
wang yang » wang yan, wang liang, wang yanling
along shu » along nhue, cong shu, along who
yang yi » yang di, yang xi, yang jui

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: wang yang yi ((dual credit) OR (total credit)) trading costs along shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang yi ((dual credit) or (total credit)) trading costs along shu ;*.