Perhaps you should try some spelling variations:
"support group international efforts." » "support group international airports.", "support group international energy.", "support group international airport.", "support from international efforts.", "support how international efforts.", "support do international efforts.", "support grant international efforts."
"support aid conservation efforts." » "support land conservation efforts.", "support bird conservation efforts.", "support basic conservation efforts.", "support grid conservation efforts.", "support a conservation efforts."

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

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