Perhaps you should try some spelling variations:
"city development services." » "city development process.", "capacity development services.", "policy development services.", "community development services."
"_ development studies." » "_ development strategies.", "_ development strategy.", "_ development policies."
"city development series." » "city development agencies.", "city development strategies.", "city development strategy.", "capacity development series.", "policy development series.", "community development series."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("_ development studies.") or ((("city development series.") OR ("city development services."))))~.
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• Removing quotes may allow a broader search: (( _ development studies. ) or ((( city development series. ) OR ( city development services. )))).
• Adding a wildcard symbol may retrieve word variants: (("_ development studies.") or ((("city development series.") OR ("city development services."))))*.