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 order integrationstheorie 2.", "supply under integrationstheorie 2.", "supply siders integrationstheorie 2."
"supply european integration series." » "supply european integration services.", "supply european interaction series.", "supply european integration server.", "supply europe integration series.", "survey european integration series."

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

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