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

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