Perhaps you should try some spelling variations:
"supply disruptions integration soziale." » "supply disruptions international soziale.", "supply migration integration soziale.", "supply options integration soziale.", "supply disruptions integration social."
"supply trade integration theories." » "supply trade integration theorems.", "supply trade integrationstheorie 2.", "supply trade integration theory.", "supply case integration theories."

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 trade integration theories.") OR ("supply disruptions integration soziale."))~.
• Removing quotes may allow a broader search: (( supply trade integration theories. ) or ( supply disruptions integration soziale. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply trade integration theories.") or ("supply disruptions integration soziale."))*.