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 statistics) OR (biostatistical OR statistics)) AND epidemiology.\\ ) OR (\\ ((practice guide) OR (practical guide)) to statistical AND epidemiology.\\ ))*\~.

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