Perhaps you should try some spelling variations:
"support g20 international efforts." » "support g20 international airports.", "support g20 international energy.", "support g20 international airport.", "support 2020 international efforts.", "support 2 international efforts.", "support 10 international efforts.", "support g international efforts."
"support area conservation efforts." » "support based conservation efforts.", "support farms conservation efforts.", "support ocean conservation efforts.", "support real conservation efforts.", "support create conservation efforts.", "support a conservation efforts."

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("support area conservation efforts.") OR ("support g20 international efforts."))~.
• Removing quotes may allow a broader search: (( support area conservation efforts. ) or ( support g20 international efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support area conservation efforts.") or ("support g20 international efforts."))*.