Perhaps you should try some spelling variations:
"supply chains international politics." » "supply chains international political.", "supply chains international policy.", "supply chains international economics.", "supply chaos international politics.", "supply changing international politics.", "supply china's international politics.", "supply chain international politics."
"supply cities integrating services." » "supply cities integration services.", "supply cities integrated services.", "supply cities regulating services.", "supply city integrating services.", "supply countries integrating services.", "supply policies integrating services.", "supply curves integrating services.", "supply cote integrating services.", "supply facilities integrating services."

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