Perhaps you should try some spelling variations:
"a development strategies." » "a development strategy.", "_ development strategies.", "clean development strategies.", "asian development strategies."
"a development policies." » "a development policy.", "a development projects.", "_ development policies.", "clean development policies.", "asian development policies."
"a development series." » "a development services.", "a development agencies.", "a development africa.", "_ development series.", "clean development series.", "asian development series."

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("a development policies.") or ("a development strategies."))) or ("a development series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("a development policies.") OR ("a development strategies."))) OR ("a development series.")).
• Removing quotes may allow a broader search: (((( a development policies. ) or ( a development strategies. ))) or ( a development series. )).
• Adding a wildcard symbol may retrieve word variants: (((("a development policies.") or ("a development strategies."))) or ("a development series."))*.