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

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

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