Perhaps you should try some spelling variations:
"support gvc international efforts." » "support gvc international airports.", "support gvc international energy.", "support gvc international airport.", "support g20 international efforts.", "support much international efforts.", "support save international efforts.", "support ndc international efforts.", "support agri international efforts."
"support grid integration efforts." » "support grid conservation efforts.", "support trade integration efforts.", "support _ integration efforts.", "support data integration efforts.", "support agri integration efforts.", "support grant integration efforts.", "support group integration 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 grid integration efforts.") OR ("support gvc international efforts."))~.
• Removing quotes may allow a broader search: (( support grid integration efforts. ) or ( support gvc international efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support grid integration efforts.") or ("support gvc international efforts."))*.