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 series.", "_ development strategies.", "_ development strategy."
"city development africa." » "capacity development africa.", "policy development africa.", "community development africa."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("_ development studies.") or ((("city development services.") OR ("city development africa."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("_ development studies.") OR ((("city development services.") OR ("city development africa."))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"_ development studies.\") or (((\"city development services.\") OR (\"city development africa.\"))))*".
• Removing quotes may allow a broader search: (( _ development studies. ) or ((( city development services. ) OR ( city development africa. ))))*.