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

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

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