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