Perhaps you should try some spelling variations:
"Supply grain irrigation waters." » "Supply grain irrigation water.", "Supply grain irrigation users.", "Supply grain irrigation systems.", "Supply gray irrigation waters.", "Supply gravity irrigation waters.", "Supply drip irrigation waters."
"supply chain irrigation system." » "supply chain irrigation systems.", "supply chain irrigation water.", "supply chain irrigation scheme.", "supply change irrigation system.", "supply basin irrigation system.", "supply chain integration system."
supply grain » supply main, supply ukraine, supply chains

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("Supply grain irrigation waters.") or ("supply chain irrigation system."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("Supply grain irrigation waters.") OR ("supply chain irrigation system.")).
• Removing quotes may allow a broader search: (( Supply grain irrigation waters. ) or ( supply chain irrigation system. )).
• Adding a wildcard symbol may retrieve word variants: (("Supply grain irrigation waters.") or ("supply chain irrigation system."))*.