Perhaps you should try some spelling variations:
oecd development » child development, based development, oriented development
development cost » development co, development context, development concept
working papers » working paper
cost working » list working, font working, ist working
hot working » net working, set working, about working
joint » point

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"oecd development cost working papers\\") or (\\"oecd development ((hot working) OR (joint working)) papers\\"))\"".
• Removing quotes may allow a broader search: (( oecd development cost working papers ) or ( oecd development ((hot working) OR (joint working)) papers )).