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

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

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