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 OR biostatistics) 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 ((biostatistical OR biostatistics) 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 ((biostatistical OR biostatistics) OR statistical) and epidemiology.\\ ) OR ((\ practical OR \ practice) guide to statistics and epidemiology.\\ ))*\.