Perhaps you should try some spelling variations:
"export trade integration schemes." » "export trade integration schengen.", "export trade irrigation schemes.", "export trade integration regimes.", "export taxes integration schemes.", "export base integration schemes.", "export tax integration schemes."
"support grant integration theory." » "support grant integration through.", "support grant information theory.", "support grant innovation theory.", "support migrant integration theory.", "support migrants integration theory.", "support statt integration theory."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support grant integration theory.") or ("export trade integration schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support grant integration theory.") OR ("export trade integration schemes."))*.
• Removing quotes may allow a broader search: (( support grant integration theory. ) or ( export trade integration schemes. ))*.