Perhaps you should try some spelling variations:
"import china integrating policies." » "import china integration policies.", "import china integrated policies.", "import china integrating positive.", "import chennai integrating policies.", "import change integrating policies.", "imports china integrating policies.", "report china integrating policies.", "imports chile integrating policies."
"import trade integration series." » "import trade integration services.", "import trade interaction series.", "import trade integration server.", "export trade integration series.", "import price integration series.", "import taxes 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 china integrating policies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import trade integration series.") OR ("import china integrating policies.")).
• Removing quotes may allow a broader search: (( import trade integration series. ) or ( import china integrating policies. )).
• Adding a wildcard symbol may retrieve word variants: (("import trade integration series.") or ("import china integrating policies."))*.