Perhaps you should try some spelling variations:
credit creating » credits creating, credit rating, credit ratings
change scoping » change becoming, change mapping, change helping
change coping » change mowing, change comparing, change becoming
nana yaa » nan ya, nanay a
3 credit » 2 credit, de credit, du credit
nan yan » nan ya, wang yan, qian yan

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 ((nana yaa) OR (nan yan)) 3 credit creating ((change coping) OR (change scoping)) shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((nana yaa) OR (nan yan)) 3 credit creating ((change coping) or (change scoping)) shu ;~".
• Adding a wildcard symbol may retrieve word variants: dong ((nana yaa) OR (nan yan)) 3 credit creating ((change coping) or (change scoping)) shu ;*.