Perhaps you should try some spelling variations:
"supply through irrigation schemes." » "supply through integration schemes.", "supply through innovation schemes.", "supply high irrigation schemes.", "supply through irrigation scheme.", "supply through irrigation systems.", "support through irrigation schemes."
"supply costs integration series." » "supply costs integration theories.", "supply costs integrating services.", "supply costs integration schemes.", "supply south integration series.", "supply systems integration series.", "supply content 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 through irrigation schemes.") or ("supply costs integration series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply through irrigation schemes.") OR ("supply costs integration series.")).
• Removing quotes may allow a broader search: (( supply through irrigation schemes. ) or ( supply costs integration series. )).
• Adding a wildcard symbol may retrieve word variants: (("supply through irrigation schemes.") or ("supply costs integration series."))*.