Perhaps you should try some spelling variations:
"a development services." » "a development agencies.", "a development process.", "a development africa.", "_ development services.", "clean development services."
"city development studies." » "city development strategies.", "city development strategy.", "city development policies.", "child development studies.", "capacity development studies.", "capital development studies."
"asian development series." » "asian development agencies.", "asian development africa.", "asian development strategies.", "human development series.", "urban development series.", "clean development series."

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("city development studies.") or ("a development services."))) or ("asian development series."))~.
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• Adding a wildcard symbol may retrieve word variants: (((("city development studies.") or ("a development services."))) or ("asian development series."))*.