Perhaps you should try some spelling variations:
"supply fare integrationstheorie 2." » "supply der integrationstheorie 2.", "supply eine integrationstheorie 2.", "supply fare integrationstheorie fur.", "supply fare integration theories.", "supply fare interpretationstheorie 2.", "supply farm integrationstheorie 2.", "supply case integrationstheorie 2.", "supply figure integrationstheorie 2."
"supply system integrating services." » "supply system integration services.", "supply system integrated services.", "supply system regulating services.", "supply systems integration services.", "supply system interactions services.", "supply systems integrating services."

Try widening your search to All Fields.

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

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