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)