Perhaps you should try some spelling variations:
"supply sector integrationstheorie 2." » "supply der integrationstheorie 2.", "supply eine integrationstheorie 2.", "supply sector integrationstheorie fur.", "supply sector integration theories.", "supply sector interpretationstheorie 2."
"supply crowd banking series." » "supply crowd banking services.", "supply crowd making series.", "supply crowd banking service.", "supply crowd funding series.", "supply round banking series.", "supply growth banking series.", "supply cost banking series.", "supply from banking series."

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: (("supply crowd banking series.") OR ("supply sector integrationstheorie 2."))~.
• Removing quotes may allow a broader search: (( supply crowd banking series. ) or ( supply sector integrationstheorie 2. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply crowd banking series.") or ("supply sector integrationstheorie 2."))*.