Perhaps you should try some spelling variations:
"supply urban integration theories." » "supply urban integration theory.", "supply urban integration through.", "supply urban integration efforts.", "supply european integration theories.", "supply global integration theories.", "supply trade integration theories.", "supply rural integration theories."
"supply sector integration series." » "supply social integration series.", "supply sector integrating services.", "supply sector integration schemes.", "supply sector integration social."

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

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