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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((\ (practical OR practice) guidebook to ((((biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistical OR biostatistical) OR biostatistical))) OR ((biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)))) OR ((biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)))) AND epidemiology.\ ) OR (\ (practical OR practice) guide to statistics AND epidemiology.\ ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\ (practical OR practice) guidebook to ((((biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistical OR biostatistical) OR biostatistical))) OR ((biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)))) OR ((biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)))) and epidemiology.\ ) OR (\ (practical OR practice) guide to statistics and epidemiology.\ ))~".
• Adding a wildcard symbol may retrieve word variants: ((\ (practical OR practice) guidebook to ((((biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistical OR biostatistical) OR biostatistical))) OR ((biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)))) OR ((biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistical OR biostatistical) OR biostatistical)))) and epidemiology.\ ) OR (\ (practical OR practice) guide to statistics and epidemiology.\ ))*.