Perhaps you should try some spelling variations:
"support group integration theories." » "support group integration theorems.", "support group integrationstheorie 2.", "support group integration theory.", "support group interaction theories.", "support group interactions theories.", "support erp integration theories.", "support grant integration theories."
"support von integration through." » "support von innovation through.", "support von interaktion through.", "support can integration through.", "support 1.2 integration through.", "rapport von integration through.", "support vs integration through."

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

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