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) OR (practical guide)))) to (biostatistics OR biostatistical) AND epidemiology.\\\\ ) OR (\\\ practice guide to statistics AND epidemiology.\\\\ ))~\\\ \\.

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