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 case interaction series." » "supply case interactions series.", "supply case interaction studies.", "supply case interaction terms.", "supply cases interaction series.", "supply based interaction series.", "supply scale interaction series.", "supply cost interaction series.", "supply chain interaction series.", "supply curve interaction 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 case interaction series.") or ("supply der integrationstheorie 2."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply case interaction series.") OR ("supply der integrationstheorie 2."))*.
• Removing quotes may allow a broader search: (( supply case interaction series. ) or ( supply der integrationstheorie 2. ))*.