Perhaps you should try some spelling variations:
"supply chain integration theories." » "supply chain integration theory.", "supply chain integration through.", "supply chain integration efforts.", "supply trade integration theories.", "supply data integration theories.", "supply grid integration theories."
"supply assets education policies." » "supply assets education policy.", "supply arts education policies.", "supply pets education policies.", "supply parents education policies.", "supply costs education policies."

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 theories.") or ("supply assets education policies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integration theories.") OR ("supply assets education policies.")).
• Removing quotes may allow a broader search: (( supply chain integration theories. ) or ( supply assets education policies. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integration theories.") or ("supply assets education policies."))*.