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

• If you are trying to use Boolean operators, they must be ALL CAPS: \ ((((\\ practice guidebook to (biostatistics OR statistical) AND epidemiology.\\ ) OR (((\\ practical guidebook to (biostatistics OR statistical) AND epidemiology.\\ ) OR (\\ practical guidebook to (((biostatistics OR statistical) OR (biostatistics OR statistical)) OR (biostatistics OR statistical)) AND epidemiology.\\ ))))) OR (\\ practical guide to statistics AND epidemiology.\\ ))~\.
• The words AND, OR and NOT may confuse the search; try adding quotes: "\ ((((\\ practice guidebook to (biostatistics OR statistical) and epidemiology.\\ ) OR (((\\ practical guidebook to (biostatistics OR statistical) and epidemiology.\\ ) OR (\\ practical guidebook to (((biostatistics OR statistical) OR (biostatistics OR statistical)) OR (biostatistics OR statistical)) and epidemiology.\\ ))))) OR (\\ practical guide to statistics and epidemiology.\\ ))~\".
• Adding a wildcard symbol may retrieve word variants: \ ((((\\ practice guidebook to (biostatistics OR statistical) and epidemiology.\\ ) OR (((\\ practical guidebook to (biostatistics OR statistical) and epidemiology.\\ ) OR (\\ practical guidebook to (((biostatistics OR statistical) OR (biostatistics OR statistical)) OR (biostatistics OR statistical)) and epidemiology.\\ ))))) OR (\\ practical guide to statistics and epidemiology.\\ ))~\*.