Perhaps you should try some spelling variations:
"supply der integrationstheorie 2." » "supply eine integrationstheorie 2.", "supply der generationstheorie 2.", "supply der migrationstheorien 2.", "supply der integrationstheorie fur.", "supply der integration theories.", "supply der interpretationstheorie 2.", "supply zur integrationstheorie 2.", "supply sector integrationstheorie 2.", "supply order integrationstheorie 2.", "supply under integrationstheorie 2.", "supply siders integrationstheorie 2."
"support der integration social." » "support der international social.", "support zur integration social.", "support sector integration social.", "support de integration social.", "support under integration social.", "support deep integration social."

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: (("support der integration social.") OR ("supply der integrationstheorie 2."))~.
• Removing quotes may allow a broader search: (( support der integration social. ) or ( supply der integrationstheorie 2. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support der integration social.") or ("supply der integrationstheorie 2."))*.