Perhaps you should try some spelling variations:
"supply charges irrigation schemes." » "supply change irrigation schemes.", "supply large irrigation schemes.", "supply charges irrigation scheme.", "supply charges irrigation systems.", "supply chains irrigation schemes.", "supply curves irrigation schemes.", "supply shortages irrigation schemes."
"supply data integration series." » "supply data integration theories.", "supply data integrating services.", "supply data integration schemes.", "supply trade integration series.", "supply _ integration series.", "supply data integrity series.", "supply water integration series."

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

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