You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: "\"\\"(((((\\\"practical OR \\\"practice) guidebook to biostatistical AND epidemiology.\\\") OR ((\\\"practical OR \\\"practice) guidebook to statistical AND epidemiology.\\\"))) OR ((\\\"practical OR \\\"practice) guide to statistics AND epidemiology.\\\"))~\\"\"".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"\\"\\\"(((((\\\\"practical OR \\\\"practice) guidebook to biostatistical and epidemiology.\\\\") OR ((\\\\"practical OR \\\\"practice) guidebook to statistical AND epidemiology.\\\\"))) OR ((\\\\"practical OR \\\\"practice) guide to statistics and epidemiology.\\\\"))~\\\"\\"\"".
• Removing quotes may allow a broader search: \ (((((\\ practical OR \\ practice) guidebook to biostatistical and epidemiology.\\ ) OR ((\\ practical OR \\ practice) guidebook to statistical AND epidemiology.\\ ))) OR ((\\ practical OR \\ practice) guide to statistics and epidemiology.\\ ))~\.