Perhaps you should try some spelling variations:
economics department » economics development, economics experiments, economics management
department working » departments working, department boarding, department nursing
oecd economics » oecd economic, oecd economies, world economics
kcd economics » oecd economies, land economics, food economics

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 department working paper ) OR ( oecd economics department working papers ))) OR ( kcd economics department working paper )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( oecd economics department working paper ) OR ( oecd economics department working papers ))) or ( kcd economics department working paper ))".
• Adding a wildcard symbol may retrieve word variants: (((( oecd economics department working paper ) OR ( oecd economics department working papers ))) or ( kcd economics department working paper ))*.