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: \ \\ \\\ \\\\ \\\\\ \\\\\\ \\\\\\\ ((\\\\\\\\ practical guidebook to ((((((biostatistics OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) AND epidemiology.\\\\\\\\ ) OR (((\\\\\\\\ practical guide to statistics AND epidemiology.\\\\\\\\ ) OR (\\\\\\\\ practice guide to statistics AND epidemiology.\\\\\\\\ ))))~\\\\\\\ \\\\\\ \\\\\ \\\\ \\\ \\ \.
• The words AND, OR and NOT may confuse the search; try adding quotes: "\ \\ \\\ \\\\ \\\\\ \\\\\\ \\\\\\\ ((\\\\\\\\ practical guidebook to ((((((biostatistics OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) and epidemiology.\\\\\\\\ ) OR (((\\\\\\\\ practical guide to statistics and epidemiology.\\\\\\\\ ) OR (\\\\\\\\ practice guide to statistics and epidemiology.\\\\\\\\ ))))~\\\\\\\ \\\\\\ \\\\\ \\\\ \\\ \\ \".
• Adding a wildcard symbol may retrieve word variants: \ \\ \\\ \\\\ \\\\\ \\\\\\ \\\\\\\ ((\\\\\\\\ practical guidebook to ((((((biostatistics OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) and epidemiology.\\\\\\\\ ) OR (((\\\\\\\\ practical guide to statistics and epidemiology.\\\\\\\\ ) OR (\\\\\\\\ practice guide to statistics and epidemiology.\\\\\\\\ ))))~\\\\\\\ \\\\\\ \\\\\ \\\\ \\\ \\ \*.