Perhaps you should try some spelling variations:
"supply urban integration theory." » "supply urban integration through.", "supply urban information theory.", "supply urban integration report.", "supply european integration theory.", "supply global integration theory.", "supply trade integration theory.", "supply rural integration theory."
"supply ocean conservation efforts." » "supply local conservation efforts.", "supply area conservation efforts.", "supply forest conservation efforts.", "supply social conservation efforts.", "supply chain conservation efforts."

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

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