Perhaps you should try some spelling variations:
environment development » development development
employee development » iphone development
special economic » social economic, spatial economics
legal economic » global economic, regional economic, general economic
local economic » global economic, social 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 (special economic)))) AND ((employee development) OR (environment development)) (leed) working papers.
• Adding a wildcard symbol may retrieve word variants: oecd ((legal economic) or (((local economic) or (special economic)))) and ((employee development) or (environment development)) (leed) working papers*.