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

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 strategy.") or ("sme development studies."))) or ("_ development series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mine development strategy.") OR ("sme development studies."))) OR ("_ development series."))*.
• Removing quotes may allow a broader search: (((( mine development strategy. ) or ( sme development studies. ))) or ( _ development series. ))*.