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