Perhaps you should try some spelling variations:
development development » development developing, development environment
employment development » environment development, employment unemployment, component development
social ecological » socio ecological
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 social ecological 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 social ecological and ((((employment development) OR (development development))) or (employee development)) (leed) working papers".
• Adding a wildcard symbol may retrieve word variants: oecd social ecological and ((((employment development) OR (development development))) or (employee development)) (leed) working papers*.