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

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

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