Perhaps you should try some spelling variations:
"export data integrationstheorie 2." » "export der integrationstheorie 2.", "export eine integrationstheorie 2.", "export aa migrationstheorie 2.", "export data integrationstheorie fur.", "export data integration theories.", "export data interpretationstheorie 2.", "export day integrationstheorie 2.", "import data integrationstheorie 2."
"supply fare integration theory." » "supply fare integration through.", "supply fare information theory.", "supply fare innovation theory.", "supply trade integration theory.", "supply die integration theory.", "supply farm integration theory.", "supply case integration theory.", "supply figure integration theory."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("export data integrationstheorie 2.") or ("supply fare integration theory."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("export data integrationstheorie 2.") OR ("supply fare integration theory."))*.
• Removing quotes may allow a broader search: (( export data integrationstheorie 2. ) or ( supply fare integration theory. ))*.