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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("sme development studies.") OR ("_ development studies."))) or ("mine development process."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sme development studies.") OR ("_ development studies."))) OR ("mine development process.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"sme development studies.\") OR (\"_ development studies.\"))) or (\"mine development process.\"))".
• Removing quotes may allow a broader search: (((( sme development studies. ) OR ( _ development studies. ))) or ( mine development process. )).
• Adding a wildcard symbol may retrieve word variants: (((("sme development studies.") OR ("_ development studies."))) or ("mine development process."))*.