Perhaps you should try some spelling variations:
"supply trade integration theories." » "supply trade integration theory.", "supply trade integration through.", "supply trade integration efforts.", "supply side integration theories.", "supply case integration theories."
"supply cost international social." » "supply cost international journal.", "supply cost international seminar.", "supply cost international commercial.", "supply costs international social.", "supply first international social.", "supply joint international social."

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 cost international social."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply trade integration theories.") OR ("supply cost international social.")).
• Removing quotes may allow a broader search: (( supply trade integration theories. ) or ( supply cost international social. )).
• Adding a wildcard symbol may retrieve word variants: (("supply trade integration theories.") or ("supply cost international social."))*.