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

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

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