Perhaps you should try some spelling variations:
"supply national integration schemes." » "supply regional integration schemes.", "supply national innovation schemes.", "supply national integrity schemes.", "supply national integration schengen.", "supply national irrigation schemes.", "supply national integration regimes.", "support national integration schemes.", "supply international integration schemes."
"export ratio integration some." » "export data integration some.", "export carlo integration some.", "export facto integration some.", "export ratio integration south.", "export ratio integration soziale.", "export ratio integration social."

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: (("export ratio integration some.") OR ("supply national integration schemes."))~.
• Removing quotes may allow a broader search: (( export ratio integration some. ) or ( supply national integration schemes. ))~.
• Adding a wildcard symbol may retrieve word variants: (("export ratio integration some.") or ("supply national integration schemes."))*.