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

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