Perhaps you should try some spelling variations:
"supply china integration policies." » "supply china immigration policies.", "supply china international policies.", "supply china migration policies.", "supply china's integration policies.", "supply china integrating policies.", "supply chip integration policies.", "supply chains integration policies.", "supply chain integration policies."
"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 chains integrating services.", "supply curves integrating services.", "supply cote integrating services."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("supply china integration policies.") or ("supply cities integrating services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply china integration policies.") OR ("supply cities integrating services.")).
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