Perhaps you should try some spelling variations:
development development » development developing, development environment
employment development » employee development, environment development, component development
global economic » global economy, regional economic
unemployment » deployment
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 global economic AND ((((employment development) OR (employment unemployment))) OR (development development)) (leed) working paper.
• The words AND, OR and NOT may confuse the search; try adding quotes: "oecd global economic and ((((employment development) OR (employment unemployment))) or (development development)) (leed) working paper".
• Adding a wildcard symbol may retrieve word variants: oecd global economic and ((((employment development) OR (employment unemployment))) or (development development)) (leed) working paper*.