Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
burke integration » market integration, europe integration, fare integration
integration some » integration south, integration soziale, integration social
support trade » support trainer, export trade, import trade
supply burke » supply curve, supply curves, supply europe

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply burke integration efforts. ) or ( support trade integration some. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply burke integration efforts. ) OR ( support trade integration some. )).
• Adding a wildcard symbol may retrieve word variants: (( supply burke integration efforts. ) or ( support trade integration some. ))*.