Perhaps you should try some spelling variations:
"supply grid integration efforts." » "supply grid international efforts.", "supply grid conservation efforts.", "supply crowd integration efforts.", "supply great integration efforts.", "support grid integration efforts."
"supply food importing countries." » "supply food exporting countries.", "supply food importing country.", "supply tools importing countries.", "supply food imports countries.", "supply oil importing countries.", "supply from importing countries.", "supply cold importing countries.", "supply crowd 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: (("supply grid integration efforts.") OR ("supply food importing countries."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply grid integration efforts.\") OR (\"supply food importing countries.\"))".
• Removing quotes may allow a broader search: (( supply grid integration efforts. ) OR ( supply food importing countries. )).
• Adding a wildcard symbol may retrieve word variants: (("supply grid integration efforts.") OR ("supply food importing countries."))*.