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

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