Perhaps you should try some spelling variations:
"supply food conservation efforts." » "supply good conservation efforts.", "supply wood conservation efforts.", "supply from conservation efforts.", "supply cold conservation efforts.", "supply crowd conservation efforts."
"support oil imports countries." » "support oil importing countries.", "support oil exporter countries.", "support oil pirls countries.", "support big imports countries.", "support our imports countries.", "support build imports countries.", "support oil exports countries.", "support food imports 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 food conservation efforts.") or ("support oil imports countries."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply food conservation efforts.") OR ("support oil imports countries.")).
• Removing quotes may allow a broader search: (( supply food conservation efforts. ) or ( support oil imports countries. )).
• Adding a wildcard symbol may retrieve word variants: (("supply food conservation efforts.") or ("support oil imports countries."))*.