Perhaps you should try some spelling variations:
"supply how integration schengen." » "supply how integration changed.", "supply how integration schemes.", "supply how integration challenges.", "supply new integration schengen.", "supply how interaction schengen.", "supply die integration schengen."
"supply charges irrigation scheme." » "supply change irrigation scheme.", "supply large irrigation scheme.", "supply surge irrigation scheme.", "supply charges irrigation systems.", "supply channels irrigation scheme.", "supply chains irrigation scheme.", "supply curves irrigation scheme."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply charges irrigation scheme.") or ("supply how integration schengen."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply charges irrigation scheme.") OR ("supply how integration schengen.")).
• Removing quotes may allow a broader search: (( supply charges irrigation scheme. ) or ( supply how integration schengen. )).
• Adding a wildcard symbol may retrieve word variants: (("supply charges irrigation scheme.") or ("supply how integration schengen."))*.