Perhaps you should try some spelling variations:
"export national integration some." » "export regional integration some.", "export national innovation some.", "export national integrity some.", "export national integration volume.", "export national integration power.", "export national integration south.", "export international integration some."
"support trade integration series." » "support trade integration theories.", "support trade integrating services.", "support trade integration schemes.", "export trade integration series.", "support grant integration series.", "import trade 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 national integration some.") or ("support trade integration series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("export national integration some.") OR ("support trade integration series."))*.
• Removing quotes may allow a broader search: (( export national integration some. ) or ( support trade integration series. ))*.