Perhaps you should try some spelling variations:
"city development studies." » "city development series.", "city development services.", "city development strategies.", "child development studies.", "capacity development studies.", "capital development studies."
"_ development studies." » "_ development series.", "_ development services.", "_ development strategies."
"a development africa." » "clean development africa.", "asian development africa."

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