Perhaps you should try some spelling variations:
"supply case integrationstheorie 2." » "supply eine integrationstheorie 2.", "supply der integrationstheorie 2.", "supply case integrationstheorie fur.", "supply case integration theories.", "supply case interpretationstheorie 2.", "supply cost integrationstheorie 2.", "supply chain integrationstheorie 2.", "supply curve integrationstheorie 2."
"supply side international policy." » "supply side international poverty.", "supply side international prices.", "supply side national policy.", "supply some international policy.", "supply time international policy.", "supply eine international policy."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply case integrationstheorie 2.") OR ("supply side international policy."))~.
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• Adding a wildcard symbol may retrieve word variants: (("supply case integrationstheorie 2.") or ("supply side international policy."))*.