Perhaps you should try some spelling variations:
credits creating » credit creating, credit rating, creation creating
change becoming » china becoming, change coping, change decoupling
change scoping » change coping, change mapping, change helping
yang yang » wang yang, wang yan
3 credits » _ credits, 3 credit, 3.3 credits
yang yaa » yang yao, yang maha, yang yera

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