Perhaps you should try some spelling variations:
"supply case international poverty." » "supply case national poverty.", "supply cases international poverty.", "supply care international poverty.", "supply cause internationale poverty.", "supply cost international poverty.", "supply chain international poverty.", "supply curve international poverty."
"import duty integration south." » "import duty integration study.", "import duty integration some.", "import duty integration social.", "import dutch integration south.", "import data integration south.", "import why integration south.", "import duties integration south."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("supply case international poverty.") or ("import duty integration south."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply case international poverty.") OR ("import duty integration south.")).
• Removing quotes may allow a broader search: (( supply case international poverty. ) or ( import duty integration south. )).
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