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