Perhaps you should try some spelling variations:
"e development studies." » "e development series.", "e development services.", "e development strategies.", "a development studies.", "sme development studies.", "mine development studies."
"_ development studies." » "_ development series.", "_ development services.", "_ development strategies."
"clean development studies." » "clean development series.", "clean development services.", "clean development strategies.", "human development studies.", "urban development studies.", "child development studies."

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

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