Perhaps you should try some spelling variations:
"supply trade integration theories." » "supply trade integration theorems.", "supply trade integrationstheorie 2.", "supply trade integration theory.", "supply case integration theories."
"supply care integration services." » "supply care integrating services.", "supply care integrated services.", "supply care insemination services.", "supply fare integration services.", "supply scale integration services.", "supply re integration services.", "supply case integration services.", "supply curve integration services.", "supply cote integration services."

Try widening your search to All Fields.

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

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