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

• Removing quotes may allow a broader search: \ ((\\ practical guidebook to ((biostatistical OR (biostatistics OR biostatistical)) OR (biostatistical OR (biostatistics OR biostatistical))) AND epidemiology.\\ ) OR (\\ ((practice guide) OR (practical guide)) to statistics AND epidemiology.\\ ))~\*.

Perhaps you should try some spelling variations:
"\ \\ practical guidebook to biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistics OR biostatistical AND epidemiology.\\ OR \\ practice guide OR practical guide to statistics AND epidemiology.\\ » "\ \\ practical guidebook to statistical OR biostatistics OR statistical OR statistical OR biostatistics OR statistical AND epidemiology.\\ OR \\ practice guide OR practical guide to statistics AND epidemiology.\\ (Expand Search), "\ \\ practical guidebook to biostatistical OR biostatistical OR biostatistical OR biostatistical OR biostatistical OR biostatistical AND epidemiology.\\ OR \\ practice guide OR practical guide to statistical AND epidemiology.\\ (Expand Search)