Perhaps you should try some spelling variations:
"support carbon integration efforts." » "support carbon international efforts.", "support carlo integration efforts.", "support urban integration efforts.", "support can integration efforts.", "supporting carbon integration efforts.", "support common integration efforts."
"support tool conservation efforts." » "support soil conservation efforts.", "support good conservation efforts.", "support local conservation efforts.", "support tools 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 tool conservation efforts.") or ("support carbon integration efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support tool conservation efforts.") OR ("support carbon integration efforts.")).
• Removing quotes may allow a broader search: (( support tool conservation efforts. ) or ( support carbon integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("support tool conservation efforts.") or ("support carbon integration efforts."))*.