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