Perhaps you should try some spelling variations:
"supply chain integration schemes." » "supply chain irrigation schemes.", "supply chain integration some.", "supply chain integration theories.", "supply trade integration schemes.", "supply data integration schemes.", "supply grid integration schemes."
"supply social irrigation system." » "supply local irrigation system.", "supply scale irrigation system.", "supply social mitigation system.", "supply social irrigation systems.", "supply social irrigation water.", "supply social irrigation scheme."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply chain integration schemes.") or ("supply social irrigation system."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integration schemes.") OR ("supply social irrigation system."))*.
• Removing quotes may allow a broader search: (( supply chain integration schemes. ) or ( supply social irrigation system. ))*.