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

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