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