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