Perhaps you should try some spelling variations:
"support grid integration efforts." » "support grid international efforts.", "support grid conservation efforts.", "support agri integration efforts.", "support grant integration efforts.", "support group integration efforts."
"supply case importing countries." » "supply case exporting countries.", "supply case importing country.", "supply case reporting countries.", "supply gas importing countries.", "supply case supporting countries.", "supply cost importing countries.", "supply chain importing countries.", "supply curve importing countries."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support grid integration efforts.") or ("supply case importing countries."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support grid integration efforts.") OR ("supply case importing countries.")).
• Removing quotes may allow a broader search: (( support grid integration efforts. ) or ( supply case importing countries. )).
• Adding a wildcard symbol may retrieve word variants: (("support grid integration efforts.") or ("supply case importing countries."))*.