Perhaps you should try some spelling variations:
"a development services." » "a development process."
"e development studies." » "e development series.", "e development strategies.", "e development strategy.", "sme development studies.", "site development studies.", "trade development studies."
"mine development studies." » "mine development series.", "mine development strategies.", "mine development strategy.", "sme development studies.", "trade development studies.", "business development studies.", "minsme development studies.", "minsite development studies.", "mintrade 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: (((("e development studies.") OR ("mine development studies."))) or ("a development services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("e development studies.") OR ("mine development studies."))) OR ("a development services.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"e development studies.\") OR (\"mine development studies.\"))) or (\"a development services.\"))".
• Removing quotes may allow a broader search: (((( e development studies. ) OR ( mine development studies. ))) or ( a development services. )).
• Adding a wildcard symbol may retrieve word variants: (((("e development studies.") OR ("mine development studies."))) or ("a development services."))*.