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 a integrating services." » "support a integrated services.", "support a testing services.", "support a integrating policies.", "support _ integrating services.", "support 2 integrating services.", "support gaps integrating 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 a integrating services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import data integration theories.") OR ("support a integrating services."))*.
• Removing quotes may allow a broader search: (( import data integration theories. ) or ( support a integrating services. ))*.