Perhaps you should try some spelling variations:
"support agri integration theories." » "support agri integration theory.", "support agri integration through.", "support agri integration efforts.", "support grid integration theories.", "support fare integration theories.", "support care integration theories.", "support a integration theories."
"import data integration schemes." » "import data irrigation schemes.", "import data integration some.", "import trade integration schemes.", "import _ integration schemes.", "import data integrity schemes.", "import duty integration schemes."

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

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