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

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("a development studies.") OR ("a development strategies."))) or ("a development strategy."))~.
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• Removing quotes may allow a broader search: (((( a development studies. ) OR ( a development strategies. ))) or ( a development strategy. )).
• Adding a wildcard symbol may retrieve word variants: (((("a development studies.") OR ("a development strategies."))) or ("a development strategy."))*.