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

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

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