Perhaps you should try some spelling variations:
"a development services." » "a development process."
"clean development studies." » "clean development series.", "clean development strategies.", "clean development policies.", "human development studies.", "urban development studies."
"e development strategy." » "sme development strategy.", "mine development strategy.", "site development strategy."

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