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

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