Perhaps you should try some spelling variations:
economies experiments » economics experiments, economic experiments, economics experimental
economic departments » economics department, economic experiments, academic departments
departments working » department working, departments wrong, department nursing
experiments tending » experiments modeling, experiments appendix
working papers » working paper
tending paper » bending paper, sending pauper, testing 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 economic departments working papers ) OR ( oecd economies experiments tending paper )).
• Adding a wildcard symbol may retrieve word variants: (( oecd economic departments working papers ) or ( oecd economies experiments tending paper ))*.