Perhaps you should try some spelling variations:
"supply chain international efforts." » "supply chain international airports.", "supply chain international energy.", "supply chain international airport.", "supply china international efforts.", "supply can international efforts.", "supply sharing international efforts."
"supply school conservation efforts." » "supply school construction efforts.", "supply soil conservation efforts.", "supply school operation efforts.", "supply shock conservation efforts.", "supply scheme conservation efforts.", "survey school conservation efforts."

Try widening your search to All Fields.

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

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