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