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