Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
integration theory » integration through, information theory, integration report
chain integration » trade integration, data integration
grid integration » trade integration, _ integration, data integration
support grid » support agri, support grant, support group

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

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