You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(((\ practical OR \ practice) guidebook to (statistical OR statistical) AND epidemiology.\ ) OR ((\ practical OR \ practice) guide to statistics AND epidemiology.\ ))~".
• Adding a wildcard symbol may retrieve word variants: (((\ practical OR \ practice) guidebook to (statistical OR statistical) AND epidemiology.\ ) OR ((\ practical OR \ practice) guide to statistics AND epidemiology.\ ))*.