Perhaps you should try some spelling variations:
development development » development environment
regional economic » regional economics
legal economic » global economic, special economic, general economic
local economic » global economic, social economic, special economic
working papers » working paper

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: oecd ((((legal economic) OR (local economic))) OR (regional economic)) AND ((development development) OR (development developing)) (leed) working papers.
• The words AND, OR and NOT may confuse the search; try adding quotes: "oecd ((((legal economic) or (local economic))) or (regional economic)) and ((development development) OR (development developing)) (leed) working papers".
• Adding a wildcard symbol may retrieve word variants: oecd ((((legal economic) or (local economic))) or (regional economic)) and ((development development) OR (development developing)) (leed) working papers*.