Perhaps you should try some spelling variations:
"e development studies." » "e development services.", "e development strategies.", "e development strategy.", "_ development studies.", "a development studies.", "sme development studies."
"asian development studies." » "asian development services.", "asian development strategies.", "asian development strategy.", "human development studies.", "urban development studies.", "clean development studies."
"e development series." » "e development services.", "e development agencies.", "e development africa.", "_ development series.", "a development series.", "sme development series."

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("e development studies.") OR ("e development series."))) or ("asian development studies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("e development studies.") OR ("e development series."))) OR ("asian development studies.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"e development studies.\") OR (\"e development series.\"))) or (\"asian development studies.\"))".
• Removing quotes may allow a broader search: (((( e development studies. ) OR ( e development series. ))) or ( asian development studies. )).
• Adding a wildcard symbol may retrieve word variants: (((("e development studies.") OR ("e development series."))) or ("asian development studies."))*.