Perhaps you should try some spelling variations:
"support group integration efforts." » "support group international efforts.", "support group conservation efforts.", "support group interaction efforts.", "support group interactions efforts.", "support erp integration efforts.", "support grant integration efforts."
"support eu integration theory." » "support eu integration through.", "support eu information theory.", "support eu innovation theory.", "support deep integration theory.", "support die integration theory.", "support data integration theory.", "support _ integration theory.", "support a integration theory.", "support 4 integration theory."

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

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