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

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

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