Perhaps you should try some spelling variations:
"import data integration theories." » "import data integration theory.", "import data integration through.", "import data integration efforts.", "import trade integration theories.", "import _ integration theories.", "import data integrity theories.", "import duty integration theories."
"support care integrated services." » "support care internet services.", "support more integrated services.", "support farmer integrated services.", "support based integrated services.", "support carbon integrated services.", "support state integrated services.", "support trade integrated services."

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 theories.") or ("support care integrated services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import data integration theories.") OR ("support care integrated services.")).
• Removing quotes may allow a broader search: (( import data integration theories. ) or ( support care integrated services. )).
• Adding a wildcard symbol may retrieve word variants: (("import data integration theories.") or ("support care integrated services."))*.