Perhaps you should try some spelling variations:
cooperation efforts » conservation efforts, collection efforts, conservation effort
factor integration » facto integration, sector integration, faculty integration
integration series » integration theories, integrating services, integration schemes
trade cooperation » border cooperation, trade creation
supply factor » supply factors, supply sector, supply water
supply trade » supply side, supply case

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

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