Perhaps you should try some spelling variations:
"supply gap integration theory." » "supply gap integration through.", "supply gap information theory.", "supply gap innovation theory.", "supply erp integration theory.", "supply fsp integration theory.", "supply data integration theory.", "supply a integration theory."
"supply ocean conservation efforts." » "supply ocean observation efforts.", "supply local conservation efforts.", "supply area conservation efforts.", "supply chain conservation efforts.", "supply oecd conservation efforts.", "supply chai conservation efforts."

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 gap integration theory.") OR ("supply ocean conservation efforts."))~.
• Removing quotes may allow a broader search: (( supply gap integration theory. ) or ( supply ocean conservation efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply gap integration theory.") or ("supply ocean conservation efforts."))*.