Perhaps you should try some spelling variations:
"support from integration efforts." » "support from international efforts.", "support from conservation efforts.", "support grid integration efforts.", "support fare integration efforts.", "support tool integration efforts."
"support group integration theory." » "support group integration through.", "support group information theory.", "support group integration report.", "support grid integration theory.", "support run integration theory.", "support through integration theory.", "support grant 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 from integration efforts.") OR ("support group integration theory."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support from integration efforts.\") OR (\"support group integration theory.\"))".
• Removing quotes may allow a broader search: (( support from integration efforts. ) OR ( support group integration theory. )).
• Adding a wildcard symbol may retrieve word variants: (("support from integration efforts.") OR ("support group integration theory."))*.