Perhaps you should try some spelling variations:
"supply data integration theories." » "supply data integration theorems.", "supply data integrationstheorie 2.", "supply data integration theory.", "supply data integrity theories."
"supply change irrigation system." » "supply change irrigation systems.", "supply change irrigation water.", "supply change irrigation scheme.", "supply change mitigation system.", "supply canal irrigation system.", "supply large irrigation system.", "supply charges irrigation system.", "supply channels irrigation system.", "supply chain's irrigation system."

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

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