Perhaps you should try some spelling variations:
"supply chain integration theories." » "supply chain integration theory.", "supply chain integration through.", "supply chain integration efforts.", "supply trade integration theories.", "supply data integration theories.", "supply grid integration theories."
"support fare integration social." » "support fare international social.", "support market integration social.", "support trade integration social.", "support data integration social.", "support falls integration social.", "support state integration social."

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 fare integration social.") OR ("supply chain integration theories."))~.
• Removing quotes may allow a broader search: (( support fare integration social. ) or ( supply chain integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support fare integration social.") or ("supply chain integration theories."))*.