Perhaps you should try some spelling variations:
scale coping » scale competing, scale housing, scale growing
dual credit » rural credit, deals credit, equal credit
coping shu » cong shu
yang yala » yang yao, yang all, yang dali
yang yang » wang yang, wang yan
wang yong » wang yang, wang hyoung, wang yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang yala) or (((yang yang) OR (wang yong)))) dual credit rating scale coping shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang yala) OR (((yang yang) OR (wang yong)))) dual credit rating scale coping shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang yala) or (((yang yang) OR (wang yong)))) dual credit rating scale coping shu ;*".