Perhaps you should try some spelling variations:
economic experiments » economic empowerment, economic instruments
economic department » economics department, economic debasement, academic department
experiments working » experiments during, experiments modeling, experiments tending
department working » departments working, department boarding, department nursing
paper » papers

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 department working paper ) OR ( oecd economic experiments working paper )).
• Adding a wildcard symbol may retrieve word variants: (( oecd economic department working paper ) or ( oecd economic experiments working paper ))*.