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