Perhaps you should try some spelling variations:
"support a integration schengen." » "support a integration changed.", "support a integration schemes.", "support a integration challenges.", "support 3 integration schengen.", "support 2 integration schengen.", "support 4 integration schengen.", "support _ integration schengen."
"support a integration theories." » "support a integration theorems.", "support a integrationstheorie 2.", "support a integration theory.", "support 3 integration theories.", "support 2 integration theories.", "support 4 integration theories.", "support _ integration theories."

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

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