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