Perhaps you should try some spelling variations:
"supply chain integration services." » "supply chain integrating services.", "supply chain integrated services.", "supply chain insemination services."
"supply factor integration theories." » "supply factor integration theorems.", "supply factor integrationstheorie 2.", "supply factor integration theory.", "supply facto integration theories.", "supply sector integration theories.", "supply actor interaction theories.", "supply factors integration theories."

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