Perhaps you should try some spelling variations:
"supply figure integration schengen." » "supply figure integration changed.", "supply figure integration schemes.", "supply figure integration challenges.", "supply fare integration schengen.", "supply fruhe integration schengen.", "supply culture integration schengen."
"supplies based integration theories." » "supplies based integration theorems.", "supplies based integrationstheorie 2.", "supplies based integration theory.", "supplies based interaction theories.", "supplies based interactions theories.", "supplies based integrated theories.", "supplies closed integration theories.", "supplies shared integration theories.", "species based 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 figure integration schengen.") OR ("supplies based integration theories."))~.
• Removing quotes may allow a broader search: (( supply figure integration schengen. ) or ( supplies based integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply figure integration schengen.") or ("supplies based integration theories."))*.