Perhaps you should try some spelling variations:
"mine development studies." » "mine development series.", "mine development services.", "mine development strategies.", "sme development studies.", "trade development studies.", "business development studies.", "minsme development studies.", "minsite development studies.", "mintrade development studies."
"a development studies." » "a development series.", "a development services.", "a development strategies."
"e development africa." » "sme development africa.", "site development africa.", "trade development africa."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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