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