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

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