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) 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) 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) and epidemiology.\\\ ) OR ((\\ practical OR \\ practice) guide to (statistics OR statistical) and epidemiology.\\\ ))~\\ \*.