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 crop irrigation schemes." » "support crop irrigation scheme.", "support crop irrigation systems.", "support drip irrigation schemes.", "support scale irrigation schemes.", "support canal irrigation schemes.", "support crops irrigation schemes.", "support cross irrigation schemes.", "support across irrigation schemes."

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 crop irrigation schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integrating policies.") OR ("support crop irrigation schemes.")).
• Removing quotes may allow a broader search: (( supply chain integrating policies. ) or ( support crop irrigation schemes. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integrating policies.") or ("support crop irrigation schemes."))*.