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