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