Perhaps you should try some spelling variations:
"supply cost integration schemes." » "supply cost integration some.", "supply cost integration theories.", "supply south integration schemes.", "supply tool integration schemes.", "supply can integration schemes.", "supply costs integration schemes."
"supply spate irrigation schemes." » "supply spate irrigation scheme.", "supply spate irrigation systems.", "supply scale irrigation schemes.", "supply water irrigation schemes.", "supply surface irrigation schemes.", "supply system irrigation schemes.", "supply side irrigation schemes."

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 cost integration schemes.") OR ("supply spate irrigation schemes."))~.
• Removing quotes may allow a broader search: (( supply cost integration schemes. ) or ( supply spate irrigation schemes. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply cost integration schemes.") or ("supply spate irrigation schemes."))*.