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