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