Perhaps you should try some spelling variations:
"a development services." » "a development process."
"e development studies." » "e development series.", "e development strategies.", "e development strategy.", "sme development studies.", "mine development studies.", "site development studies."
"human development studies." » "human development series.", "human development strategies.", "human development strategy."

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 ((("human development studies.") or ("a development services."))))~.
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• Adding a wildcard symbol may retrieve word variants: (("e development studies.") or ((("human development studies.") or ("a development services."))))*.