Perhaps you should try some spelling variations:
"city development studies." » "city development services.", "city development strategies.", "city development strategy.", "capacity development studies.", "policy development studies.", "community development studies."
"a development series." » "a development services.", "a development agencies.", "a development strategies."
"urban development series." » "urban development services.", "urban development agencies.", "urban development strategies.", "human development series."

Try widening your search to All Fields.

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