Perhaps you should try some spelling variations:
"export can integration theories." » "export can integration theorems.", "export can integrationstheorie 2.", "export can integration theory.", "export chain integration theories.", "export von integration theories.", "export urban integration theories.", "exports can integration theories.", "export ban integration theories.", "export bans integration theories."
"support trade integration some." » "support trade integration south.", "support trade integration soziale.", "support trade integration social.", "support trainer integration some.", "export trade integration some.", "import trade 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: (("support trade integration some.") or ("export can integration theories."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support trade integration some.") OR ("export can integration theories.")).
• Removing quotes may allow a broader search: (( support trade integration some. ) or ( export can integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("support trade integration some.") or ("export can integration theories."))*.