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 international integration some." » "supply international migration some.", "supply international cooperation some.", "supply international arbitration some.", "security international integration some.", "policy international integration some.", "supply interruptions integration some.", "supply international integration south.", "supply international integration soziale.", "supply international integration social."

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