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

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

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