Perhaps you should try some spelling variations:
"a development agencies." » "a development policies."
"_ 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."

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