Perhaps you should try some spelling variations:
"supply chain integration series." » "supply chain integration theories.", "supply chain integrating services.", "supply chain integration schemes.", "supply trade integration series.", "supply data integration series.", "supply grid integration series."
"supply crowd irrigation system." » "supply crowd irrigation systems.", "supply crowd irrigation water.", "supply crowd irrigation scheme.", "supply crop irrigation system.", "supply flood irrigation system.", "supply from irrigation system.", "supply growth irrigation system.", "supply cost irrigation system.", "supply how irrigation system."

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