Perhaps you should try some spelling variations:
"import china integrated services." » "import china internet services.", "import china integrating services.", "import china integration services.", "import gain integrated services.", "report china integrated services."
"export share integration series." » "export share integration theories.", "export share integrating services.", "export share integration schemes.", "export fare integration series.", "export care integration series.", "export trade integration series.", "exports share integration series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("export share integration series.") or ("import china integrated services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("export share integration series.") OR ("import china integrated services."))*.
• Removing quotes may allow a broader search: (( export share integration series. ) or ( import china integrated services. ))*.