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) OR (practical guide)) to biostatistical AND epidemiology.\ ) OR (\ ((practical guidebook) OR (practical guide)) to statistical AND epidemiology.\ ))) OR (\ practice guide to statistics AND epidemiology.\ ))~".
• Adding a wildcard symbol may retrieve word variants: ((((\ ((practical guidebook) OR (practical guide)) to biostatistical AND epidemiology.\ ) OR (\ ((practical guidebook) OR (practical guide)) to statistical AND epidemiology.\ ))) OR (\ practice guide to statistics AND epidemiology.\ ))*.