Perhaps you should try some spelling variations:
"a development studies." » "a development services.", "a development strategies.", "a development strategy.", "_ development studies.", "asian development studies.", "city development studies."
"a development series." » "a development services.", "a development agencies.", "a development africa.", "_ development series.", "asian development series.", "city 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: (("a development studies.") or ((("a development series.") OR ("clean development series."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("a development studies.") OR ((("a development series.") OR ("clean development series.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"a development studies.\") or (((\"a development series.\") OR (\"clean development series.\"))))".
• Removing quotes may allow a broader search: (( a development studies. ) or ((( a development series. ) OR ( clean development series. )))).
• Adding a wildcard symbol may retrieve word variants: (("a development studies.") or ((("a development series.") OR ("clean development series."))))*.