Perhaps you should try some spelling variations:
"supply national integration theories." » "supply regional integration theories.", "supply national innovation theories.", "supply national integrity theories.", "supply national integration theory.", "supply national integration through.", "supply national integration efforts."
"export data integration some." » "export trade integration some.", "export _ integration some.", "export data integrity some.", "export data integration volume.", "export data integration power.", "export data integration south.", "export day integration some.", "import data integration some.", "export ratio integration some."

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

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