Perhaps you should try some spelling variations:
development development » development developing, development environment
employment development » environment development, employment unemployment, component development
legal economic » local economic, global economic, regional economic
oecd legal » oecd local
paper » papers

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 AND ((((employment development) OR (development development))) OR (employee development)) (leed) working paper.
• The words AND, OR and NOT may confuse the search; try adding quotes: "oecd legal economic and ((((employment development) OR (development development))) or (employee development)) (leed) working paper".
• Adding a wildcard symbol may retrieve word variants: oecd legal economic and ((((employment development) OR (development development))) or (employee development)) (leed) working paper*.