Perhaps you should try some spelling variations:
"challenges facing plan policy development." » "challenges facing land policy development.", "challenges facing urban policy development.", "challenges financing plan policy development.", "challenges trading plan policy development.", "challenges facing brand policy development."
"challenges facing a social development." » "challenges facing _ social development."

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: (("challenges facing a social development.") or ("challenges facing plan policy development."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("challenges facing a social development.") OR ("challenges facing plan policy development.")).
• Removing quotes may allow a broader search: (( challenges facing a social development. ) or ( challenges facing plan policy development. )).
• Adding a wildcard symbol may retrieve word variants: (("challenges facing a social development.") or ("challenges facing plan policy development."))*.