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) OR biostatistical) AND epidemiology.\\ ) OR (\\ practical guide to statistics AND epidemiology.\\ ))*.

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