Perhaps you should try some spelling variations:
"supply side integrationstheorie 2." » "supply eine integrationstheorie 2.", "supply der integrationstheorie 2.", "supply revidierte integrationstheorie 2.", "supply side integrationstheorie fur.", "supply side integration theories.", "supply side interpretationstheorie 2."
"supply congo integrated policies." » "supply congo integration policies.", "supply congo integrating policies.", "supply congo integrated policy.", "supply change integrated policies.", "supply non integrated policies.", "supply costs integrated policies.", "supply cost integrated policies.", "supply cold integrated policies."

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 congo integrated policies.") OR ("supply side integrationstheorie 2."))~.
• Removing quotes may allow a broader search: (( supply congo integrated policies. ) or ( supply side integrationstheorie 2. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply congo integrated policies.") or ("supply side integrationstheorie 2."))*.