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."
"supply marine navigation services." » "supply marine sanitation services.", "supply marine sanitation service.", "supply marine information services.", "supply air navigation services.", "supply river navigation services.", "supply market navigation services.", "supply tariff navigation 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 chain integration theories.") or ("supply marine navigation services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integration theories.") OR ("supply marine navigation services.")).
• Removing quotes may allow a broader search: (( supply chain integration theories. ) or ( supply marine navigation services. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integration theories.") or ("supply marine navigation services."))*.