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

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