Perhaps you should try some spelling variations:
"supply chain integrationstheorie 2." » "supply eine integrationstheorie 2.", "supply der integrationstheorie 2.", "supply chain integrationstheorie fur.", "supply chain integration theories.", "supply chain interpretationstheorie 2."
"supply shadow integrating services." » "supply shadow integration services.", "supply shadow integrated services.", "supply shadow regulating services.", "supply shallow integration services.", "supply change integrating services."

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 integrationstheorie 2.") or ("supply shadow integrating services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integrationstheorie 2.") OR ("supply shadow integrating services.")).
• Removing quotes may allow a broader search: (( supply chain integrationstheorie 2. ) or ( supply shadow integrating services. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integrationstheorie 2.") or ("supply shadow integrating services."))*.