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

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