Perhaps you should try some spelling variations:
economics departments » economics department, economics experiments, economics payments
economic departments » economics department, economic experiments, academic departments
departments working » department working, departments wrong, department nursing
oecd economics » oecd economic, oecd economies, kcd economics
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 economics departments working papers ) OR ( world economic departments working papers )).
• Adding a wildcard symbol may retrieve word variants: (( oecd economics departments working papers ) or ( world economic departments working papers ))*.