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

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

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