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