Perhaps you should try some spelling variations:
"supply side irrigation schemes." » "supply side irrigation scheme.", "supply side irrigation systems.", "supply saline irrigation schemes.", "supply scale irrigation schemes.", "supply under irrigation schemes."
"supply crowd integration south." » "supply grid integration south.", "supply rfid integration south.", "supply beyond integration south.", "supply crowd integration study.", "supply crowd integration some.", "supply crowd integration social.", "supply growth integration south.", "supply cost integration south.", "supply from integration south."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply side irrigation schemes.") or ("supply crowd integration south."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply side irrigation schemes.") OR ("supply crowd integration south."))*.
• Removing quotes may allow a broader search: (( supply side irrigation schemes. ) or ( supply crowd integration south. ))*.