Perhaps you should try some spelling variations:
"supply design irrigation system." » "supply design irrigation systems.", "supply design irrigation water.", "supply design irrigation scheme.", "supply basin irrigation system.", "supply deficit irrigation system.", "supply drip irrigation system.", "supplies design irrigation system.", "support design irrigation system.", "supply decisions irrigation system."
"supply from mitigation scheme." » "supply from irrigation scheme.", "supply from irrigation schemes.", "supply from mitigation systems.", "supply from motivation scheme.", "supply flood mitigation scheme.", "supply error mitigation scheme."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply design irrigation system.") OR ("supply from mitigation scheme."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply design irrigation system.\") OR (\"supply from mitigation scheme.\"))*".
• Removing quotes may allow a broader search: (( supply design irrigation system. ) OR ( supply from mitigation scheme. ))*.