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

• The words AND, OR and NOT may confuse the search; try adding quotes: "\ \\ ((((\\\ practical guidebook to biostatistics AND epidemiology.\\\ ) OR (\\\ practical guidebook to biostatistics 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 AND epidemiology.\\\ ) OR (\\\ practical guidebook to biostatistics AND epidemiology.\\\ ))) OR (((\\\ practical guide to statistics AND epidemiology.\\\ ) OR (\\\ practice guide to statistics AND epidemiology.\\\ ))))~\*.