Perhaps you should try some spelling variations:
"supply vertical integration theories." » "supply regional integration theories.", "supply vertical integration theory.", "supply vertical integration through.", "supply vertical integration efforts."
"supply asian integration series." » "supply asian integrating services.", "supply asian integration schemes.", "supply asian integration social.", "supply urban integration series.", "supply american integration series.", "supply spatial integration series.", "supply side integration series.", "supply asset integration series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply asian integration series.") or ("supply vertical integration theories."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply asian integration series.") OR ("supply vertical integration theories.")).
• Removing quotes may allow a broader search: (( supply asian integration series. ) or ( supply vertical integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("supply asian integration series.") or ("supply vertical integration theories."))*.