Perhaps you should try some spelling variations:
"support agri integration theories." » "support agri integration theorems.", "support agri integrationstheorie 2.", "support agri integration theory.", "support grid integration theories.", "support der integration theories.", "support iii integration theories.", "support aging integration theories.", "support a integration theories."
"export data integration schengen." » "export data integration changed.", "export data integration schemes.", "export data integration challenges.", "export data integrity schengen.", "export day integration schengen.", "import data integration schengen."

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: (("support agri integration theories.") OR ("export data integration schengen."))~.
• Removing quotes may allow a broader search: (( support agri integration theories. ) or ( export data integration schengen. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support agri integration theories.") or ("export data integration schengen."))*.