Perhaps you should try some spelling variations:
"supply can international policy." » "supply can international poverty.", "supply can international prices.", "supply can national policy.", "supply care international policy.", "supply bank international policy.", "supply law international policy.", "supply chain international policy.", "supply case international policy.", "supply a international policy."
"supply china international economics." » "supply chains international economics.", "supply chain international economics.", "supply china international economic."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("supply can international policy.") OR ("supply china international economics."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply can international policy.\") OR (\"supply china international economics.\"))".
• Removing quotes may allow a broader search: (( supply can international policy. ) OR ( supply china international economics. )).
• Adding a wildcard symbol may retrieve word variants: (("supply can international policy.") OR ("supply china international economics."))*.