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

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

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