Perhaps you should try some spelling variations:
development development » development developing, development environment
employment development » environment development, employment unemployment, component development
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 local) OR (oecd legal)) economic AND ((((employment development) OR (development development))) OR (employee development)) (leed) working papers*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((oecd local) or (oecd legal)) economic and ((((employment development) OR (development development))) or (employee development)) (leed) working papers*".