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) and epidemiology.\\ ) OR (\ practice guide to statistical and epidemiology.\\ ))~\*.

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