Perhaps you should try some spelling variations:
"e development services." » "e development agencies.", "e development process.", "e development africa.", "a development services.", "sme development services.", "mine development services."
"e development studies." » "e development strategies.", "e development strategy.", "e development policies.", "a development studies.", "sme development studies.", "mine development studies."
"_ development series." » "_ development agencies.", "_ development africa.", "_ development strategies."

Try widening your search to All Fields.

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