Perhaps you should try some spelling variations:
"support agri integration theories." » "support agri integration theorems.", "support agri integrationstheorie 2.", "support agri integration theory.", "support grid integration theories.", "support der integration theories.", "support iii integration theories.", "support aging integration theories.", "support a integration theories."
"support die integration some." » "support die integration south.", "support die integration soziale.", "support die integration social.", "support trade integration some.", "support de integration some.", "support deep integration some.", "support does 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 agri integration theories.") or ("support die integration some."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support agri integration theories.") OR ("support die integration some.")).
• Removing quotes may allow a broader search: (( support agri integration theories. ) or ( support die integration some. )).
• Adding a wildcard symbol may retrieve word variants: (("support agri integration theories.") or ("support die integration some."))*.