Perhaps you should try some spelling variations:
"import price integrating policies." » "import price international policies.", "import price integrating countries.", "import price immigration policies.", "import policies integrating policies.", "import china integrating policies.", "import prices integrating policies.", "export price integrating policies.", "export prices integrating policies."
"import trade integration series." » "import trade integration theories.", "import trade integrating services.", "import trade integration schemes.", "export trade integration series.", "import taxes integration series.", "import share integration series."

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 trade integration series.") or ("import price integrating policies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import trade integration series.") OR ("import price integrating policies.")).
• Removing quotes may allow a broader search: (( import trade integration series. ) or ( import price integrating policies. )).
• Adding a wildcard symbol may retrieve word variants: (("import trade integration series.") or ("import price integrating policies."))*.