Perhaps you should try some spelling variations:
credit trading » credit training, credit rating, credit standing
trading value » trading volume, trading volumes, creating value
closing south » housing south, looking south, closing about
dual credit » rural credit, deals credit, equal credit
closing shu » closing your
done using » line using, move using
a dual » _ dual

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((done using) or (wang yan)) a dual credit trading value ((closing shu) OR (closing south)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((done using) OR (wang yan)) a dual credit trading value ((closing shu) OR (closing south)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((done using) or (wang yan)) a dual credit trading value ((closing shu) OR (closing south)) ;*".