Perhaps you should try some spelling variations:
"e development agencies." » "e development policies.", "sme development agencies.", "mine development agencies.", "site development agencies."
"a development series." » "a development services.", "a development strategies.", "a development strategy."
"clean development policy." » "human development policy.", "urban development policy."

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