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 (biostatistical OR statistics) AND epidemiology.\\ ) OR (\\ (practical OR practice) guide to statistical AND epidemiology.\\ ))~".
• Adding a wildcard symbol may retrieve word variants: \ ((\\ (practical OR practice) guidebook to (biostatistical OR statistics) AND epidemiology.\\ ) OR (\\ (practical OR practice) guide to statistical AND epidemiology.\\ ))*.