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 ((biostatistics OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) AND epidemiology.\\\") OR (\\\"practical guide to statistics AND epidemiology.\\\"))*\\"\"".
• Removing quotes may allow a broader search: ((\ ((practice guidebook) OR (practical guidebook)) to ((biostatistics OR (biostatistical OR statistical)) OR (biostatistical OR statistical)) AND epidemiology.\ ) OR (\ practical guide to statistics AND epidemiology.\ ))*.