Perhaps you should try some spelling variations:
"import data integration schemes." » "import data irrigation schemes.", "import data integration some.", "import data integration theories.", "import trade integration schemes.", "import _ integration schemes.", "import data integrity schemes.", "import duty integration schemes."
"support transit information theory." » "support traffic information theory.", "support credit information theory.", "support trade information theory.", "support grant information theory."

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

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