Perhaps you should try some spelling variations:
"support private international efforts." » "support private international airports.", "support private international energy.", "support private international airport.", "support private information efforts.", "support finance international efforts.", "supporting private international efforts.", "support climate international efforts.", "supply private international efforts."
"support group conservation efforts." » "support group cooperation efforts.", "support from conservation efforts.", "support good conservation efforts.", "support grant 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 private international efforts.") or ("support group conservation efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support private international efforts.") OR ("support group conservation efforts.")).
• Removing quotes may allow a broader search: (( support private international efforts. ) or ( support group conservation efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("support private international efforts.") or ("support group conservation efforts."))*.