Perhaps you should try some spelling variations:
economies experiments » economics experiments, economic experiments, economics experimental
economics department » economics development, economics experiments, economics management
experiments working » experiments during, experiments modeling, experiments tending
department working » departments working, department boarding, department nursing
oecd economics » oecd economic, kcd economics, world economics
oecd economies » oecd economic
using paper » using panel, using page, using paired

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