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

• The words AND, OR and NOT may confuse the search; try adding quotes: "\ ((\ practical guidebook to (biostatistical OR biostatistics) AND epidemiology.\\ ) OR (\ ((practice guide) OR (practical guide)) to (statistics OR statistical) AND epidemiology.\\ ))*\~".
• Adding a wildcard symbol may retrieve word variants: \ ((\ practical guidebook to (biostatistical OR biostatistics) AND epidemiology.\\ ) OR (\ ((practice guide) OR (practical guide)) to (statistics OR statistical) AND epidemiology.\\ ))*\*.