Perhaps you should try some spelling variations:
"supply data integration theories." » "supply data integration theory.", "supply data integration through.", "supply data integration efforts.", "supply trade integration theories.", "supply _ integration theories.", "supply data integrity theories.", "supply water integration theories."
"supply change irrigation scheme." » "supply change mitigation scheme.", "supply canal irrigation scheme.", "supply large irrigation scheme.", "supply change irrigation systems.", "supply charges irrigation scheme.", "supply chain irrigation scheme.", "supply chains irrigation scheme."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("supply data integration theories.") OR ("supply change irrigation scheme."))~.
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• Removing quotes may allow a broader search: (( supply data integration theories. ) OR ( supply change irrigation scheme. ))*.