Perhaps you should try some spelling variations:
"supply systems international efforts." » "supply states international efforts.", "supply systems integration efforts.", "supply costs international efforts.", "supply systems international airports.", "supply systems international energy.", "supply systems international airport."
"supply grid conservation efforts." » "supply aid conservation efforts.", "supply good conservation efforts.", "supply soil conservation efforts.", "supply crowd conservation efforts.", "support grid conservation efforts."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("supply grid conservation efforts.") or ("supply systems international efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply grid conservation efforts.") OR ("supply systems international efforts.")).
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