Perhaps you should try some spelling variations:
costs coping » costs keeping, costs china, costs timing
hua credit » dual credit, a credit, du credit
ida credit » ida credits, a credit, de credit
coping shu » cong shu
yang yang » wang yang, wang yan
yang all » wang all, yang dali, yang li

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang yang all ((hua credit) or (ida credit)) trading costs coping shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang all ((hua credit) OR (ida credit)) trading costs coping shu ;*.