Perhaps you should try some spelling variations:
"supply cost international politics." » "supply cost international political.", "supply cost international policy.", "supply cost international economics.", "supply costs international politics.", "supply costea international politics.", "supply 1st international politics."
"supply chains international poverty." » "supply chains national poverty.", "supply chaos international poverty.", "supply changing international poverty.", "supply china's international poverty.", "supply chain international poverty."

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 cost international politics.") or ("supply chains international poverty."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply cost international politics.") OR ("supply chains international poverty.")).
• Removing quotes may allow a broader search: (( supply cost international politics. ) or ( supply chains international poverty. )).
• Adding a wildcard symbol may retrieve word variants: (("supply cost international politics.") or ("supply chains international poverty."))*.