Perhaps you should try some spelling variations:
"supply vertical integration theory." » "supply regional integration theory.", "supply vertical integration through.", "supply vertical information theory.", "supply vertical integration report."
"supply asian integration series." » "supply asian integration theories.", "supply asian integrating services.", "supply asian integration schemes.", "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 theory."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply asian integration series.") OR ("supply vertical integration theory.")).
• Removing quotes may allow a broader search: (( supply asian integration series. ) or ( supply vertical integration theory. )).
• Adding a wildcard symbol may retrieve word variants: (("supply asian integration series.") or ("supply vertical integration theory."))*.