Perhaps you should try some spelling variations:
"supply content integrationstheorie 2." » "supply eine integrationstheorie 2.", "supply der integrationstheorie 2.", "supply orientierte integrationstheorie 2.", "supply content integrationstheorie fur.", "supply content integration theories.", "supply content interpretationstheorie 2.", "supply contract integrationstheorie 2.", "supply cote integrationstheorie 2.", "supply current integrationstheorie 2."
"supply trade integration regional." » "supply trade integration report.", "supply case integration regional."

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

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