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 crowd integration series." » "supply crowd integrating services.", "supply crowd integration schemes.", "supply crowd integration social.", "supply grid integration series.", "supply trade integration series.", "supply urban integration series.", "supply growth integration series.", "supply cost integration series.", "supply how 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 chain integration theories.") or ("supply crowd integration series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integration theories.") OR ("supply crowd integration series.")).
• Removing quotes may allow a broader search: (( supply chain integration theories. ) or ( supply crowd integration series. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integration theories.") or ("supply crowd integration series."))*.