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

• Removing quotes may allow a broader search: \ \\ ((\\\ ((practice guidebook) OR (practical guidebook)) to biostatistics AND epidemiology.\\\ ) OR (((\\\ practice guide to statistics AND epidemiology.\\\ ) OR (\\\ practice guide to statistical AND epidemiology.\\\ ))))~\\.

Perhaps you should try some spelling variations:
"\ \\ \\\ practice guidebook OR practical guidebook to biostatistics AND epidemiology.\\\ OR \\\ practice guide to statistics AND epidemiology.\\\ OR \\\ practice guide to statistical AND epidemiology.\\\ \" » "\ \\ \\\ practice guidebook OR practical guide to biostatistics AND epidemiology.\\\ OR \\\ practice guide to statistics AND epidemiology.\\\ OR \\\ practice guide to statistical AND epidemiology.\\\ \" (Expand Search), "\ \\ \\\ practical guidebook OR practical guidebook to biostatistics AND epidemiology.\\\ OR \\\ practical guide to statistics AND epidemiology.\\\ OR \\\ practical guide to statistical AND epidemiology.\\\ \" (Expand Search)