Perhaps you should try some spelling variations:
"support der integration theory." » "support der integration through.", "support der information theory.", "support der innovation theory.", "support zur integration theory.", "support sector integration theory.", "support de integration theory.", "support under integration theory.", "support deep integration theory."
"support group integration some." » "support group interaction some.", "support group interactions some.", "support erp integration some.", "support group integration south.", "support group integration soziale.", "support group integration social.", "support grant integration some."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("support der integration theory.") OR ("support group integration some."))~.
• Removing quotes may allow a broader search: (( support der integration theory. ) or ( support group integration some. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support der integration theory.") or ("support group integration some."))*.