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 case integration series." » "supply case integration services.", "supply case interaction series.", "supply case integration server.", "supply care integration series.", "supply scale integration series.", "supply based integration series.", "supply cost integration series.", "supply chain integration series.", "supply curve integration series."

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