Perhaps you should try some spelling variations:
"mine development studies." » "mine development services.", "mine development strategies.", "mine development strategy.", "trade development studies.", "business development studies."
"sme development series." » "sme development services.", "sme development agencies.", "sme development strategies.", "trade development series."
"site development africa." » "estate development africa.", "service development africa.", "future 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 ((("sme development series.") or ("site development africa."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("mine development studies.") OR ((("sme development series.") OR ("site development africa.")))).
• Removing quotes may allow a broader search: (( mine development studies. ) or ((( sme development series. ) or ( site development africa. )))).
• Adding a wildcard symbol may retrieve word variants: (("mine development studies.") or ((("sme development series.") or ("site development africa."))))*.