Perhaps you should try some spelling variations:
"supply chain integrating policies." » "supply chain integration policies.", "supply chain integrated policies.", "supply chain integrating positive.", "supply china integrating policies.", "supply change integrating policies."
"support covid testing services." » "support covid existing services.", "support covid lending services.", "support covid training services.", "support david testing services.", "support come testing services.", "support provided testing services.", "support food testing services.", "support load testing services.", "support board testing 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 chain integrating policies.") or ("support covid testing services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integrating policies.") OR ("support covid testing services.")).
• Removing quotes may allow a broader search: (( supply chain integrating policies. ) or ( support covid testing services. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integrating policies.") or ("support covid testing services."))*.