Perhaps you should try some spelling variations:
"supply grid integration schengen." » "supply grid integration changed.", "supply grid integration schemes.", "supply grid integration challenges.", "supply crowd integration schengen.", "supply great integration schengen.", "support grid integration schengen."
"supply der integration policy." » "supply der integration policies.", "supply der immigration policy.", "supply der international policy.", "supply zur integration policy.", "supply sector integration policy.", "supply order integration policy.", "supply under integration policy.", "supply siders integration policy."

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 grid integration schengen.") OR ("supply der integration policy."))~.
• Removing quotes may allow a broader search: (( supply grid integration schengen. ) or ( supply der integration policy. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply grid integration schengen.") or ("supply der integration policy."))*.