Perhaps you should try some spelling variations:
"supply road construction efforts." » "supply road conservation efforts.", "supply road construction costs.", "supply road construction works.", "supply _ construction efforts.", "supply crowd construction efforts.", "supply role construction efforts.", "supply rural construction efforts."
"supply fare integration theory." » "supply fare integration through.", "supply fare information theory.", "supply fare integration report.", "supply market integration theory.", "supply trade integration theory.", "supply data integration theory.", "supply farm integration theory.", "supply case integration theory."

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 fare integration theory.") or ("supply road construction efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply fare integration theory.") OR ("supply road construction efforts.")).
• Removing quotes may allow a broader search: (( supply fare integration theory. ) or ( supply road construction efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("supply fare integration theory.") or ("supply road construction efforts."))*.