Perhaps you should try some spelling variations:
"supply data integration theory." » "supply data integration through.", "supply data information theory.", "supply data integration report.", "supply trade integration theory.", "supply _ integration theory.", "supply data integrity theory.", "supply water integration theory."
"supply cote irrigation scheme." » "supply cote irrigation systems.", "supply scale irrigation scheme.", "supply water irrigation scheme.", "supply spate irrigation scheme.", "supply costs irrigation scheme.", "supply cost irrigation scheme.", "supply case irrigation scheme."

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 data integration theory.") OR ("supply cote irrigation scheme."))~.
• Removing quotes may allow a broader search: (( supply data integration theory. ) or ( supply cote irrigation scheme. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply data integration theory.") or ("supply cote irrigation scheme."))*.