Perhaps you should try some spelling variations:
"supply der integration theories." » "supply der integration theorems.", "supply der integrationstheorie 2.", "supply der integration theory.", "supply zur integration theories.", "supply sector integration theories.", "supply order integration theories.", "supply under integration theories.", "supply siders integration theories."
"supply cost testing services." » "supply cost existing services.", "supply cost lending services.", "supply cost training services.", "supply test testing services.", "supply cosmetic testing services.", "supply cost cutting services.", "supply costs testing services."

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: (("supply cost testing services.") OR ("supply der integration theories."))~.
• Removing quotes may allow a broader search: (( supply cost testing services. ) or ( supply der integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply cost testing services.") or ("supply der integration theories."))*.