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

• Removing quotes may allow a broader search: \ (( practical guidebook to (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 biostatistics OR biostatistical AND epidemiology.\\ OR practice guide OR practical guide to statistics AND epidemiology.\\ *\ » "\ practical guidebook to biostatistics OR statistical AND epidemiology.\\ OR practice guide OR practical guide to statistics AND epidemiology.\\ *\ (Expand Search), "\ practical guidebook to biostatistical OR biostatistical AND epidemiology.\\ OR practice guide OR practical guide to statistical AND epidemiology.\\ *\ (Expand Search)