Perhaps you should try some spelling variations:
"supply trade integrationstheorie 2." » "supply der integrationstheorie 2.", "supply eine integrationstheorie 2.", "supply traditionelle integrationstheorie 2.", "supply trade integrationstheorie fur.", "supply trade integration theories.", "supply trade interpretationstheorie 2.", "supply case integrationstheorie 2."
"supply american integration schemes." » "supply numerical integration schemes.", "supply urban integration schemes.", "supply american integration schengen.", "supply american irrigation schemes.", "supply american integration regimes.", "supply mexican integration schemes.", "supply africa integration schemes.", "ugly american integration schemes."

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

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