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