Perhaps you should try some spelling variations:
"export der integrationstheorie 2." » "export eine integrationstheorie 2.", "export der generationstheorie 2.", "export der migrationstheorien 2.", "export der integrationstheorie fur.", "export der integration theories.", "export der interpretationstheorie 2.", "exponat der integrationstheorie 2.", "export day integrationstheorie 2.", "export led integrationstheorie 2."
"support group integration social." » "support group international social.", "support group interaction social.", "support group interactions social.", "support erp integration social.", "support grant integration social."

Try widening your search to All Fields.

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

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