Perhaps you should try some spelling variations:
"support global integration theories." » "support global integration theorems.", "support global integrationstheorie 2.", "support global integration theory.", "support regional integration theories.", "import global integration theories.", "supply global integration theories."
"support european integration theories." » "support european integration theorems.", "support european integrationstheorie 2.", "support european integration theory.", "sport european integration theories.", "supply european integration theories.", "exports european integration theories."

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

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