Perhaps you should try some spelling variations:
oecd development » child development, based development, oriented development
centre working » centred working, century working, genre working
center working » centred working, century working, inter working

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 development ((centre working) OR (center working)) papers.
• Adding a wildcard symbol may retrieve word variants: oecd development ((centre working) or (center working)) papers*.