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

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

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