Perhaps you should try some spelling variations:
"import care integration theories." » "import care integration theory.", "import care integration through.", "import care integration efforts.", "import fare integration theories.", "import can integration theories.", "import market integration theories.", "import share integration theories.", "import value integration theories."
"export policies integrating services." » "export policies reintegration services.", "export countries integrating services.", "export policy integration services.", "export policies integrated services.", "export policies testing services.", "export policies integrating policies.", "import policies integrating services.", "support policies integrating services.", "export prices integrating services."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("import care integration theories.") or ("export policies integrating services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import care integration theories.") OR ("export policies integrating services.")).
• Removing quotes may allow a broader search: (( import care integration theories. ) or ( export policies integrating services. )).
• Adding a wildcard symbol may retrieve word variants: (("import care integration theories.") or ("export policies integrating services."))*.