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: (((( political economic ) OR ( ecological economics ))) OR ( political economy )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( political economic ) OR ( ecological economics ))) or ( political economy ))".
• Adding a wildcard symbol may retrieve word variants: (((( political economic ) OR ( ecological economics ))) or ( political economy ))*.