Perhaps you should try some spelling variations:
"support carbon international efforts." » "support carbon international airports.", "support carbon international energy.", "support carbon international airport.", "support carlton international efforts.", "support darton international efforts.", "support caricom international efforts.", "supporting carbon international efforts.", "support can international efforts.", "support common international efforts."
"support good conservation efforts." » "support wood conservation efforts.", "support good conversation efforts.", "support good conversations efforts.", "support food conservation efforts.", "support grid conservation efforts.", "support group 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 good conservation efforts.") or ("support carbon international efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support good conservation efforts.") OR ("support carbon international efforts."))*.
• Removing quotes may allow a broader search: (( support good conservation efforts. ) or ( support carbon international efforts. ))*.