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 biostatistics) AND epidemiology.\\\ ) OR (\ practical guide to statistical AND epidemiology.\\\ ))*\\.

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