Perhaps you should try some spelling variations:
"support carbon integration efforts." » "support carbon international efforts.", "support urban integration efforts.", "support can integration efforts.", "support care integration efforts.", "supporting 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 ("support carbon integration efforts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support good conservation efforts.\") OR (\"support carbon integration efforts.\"))".
• Removing quotes may allow a broader search: (( support good conservation efforts. ) OR ( support carbon integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("support good conservation efforts.") OR ("support carbon integration efforts."))*.