Perhaps you should try some spelling variations:
"e development studies." » "e development series.", "e development services.", "e development policies.", "_ development studies.", "sme development studies.", "mine development studies."
"e development strategies." » "_ development strategies.", "sme development strategies.", "mine 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: (((("e development studies.") or ("a development strategy."))) or ("e development strategies."))~.
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• Removing quotes may allow a broader search: (((( e development studies. ) or ( a development strategy. ))) or ( e development strategies. )).
• Adding a wildcard symbol may retrieve word variants: (((("e development studies.") or ("a development strategy."))) or ("e development strategies."))*.