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) 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) OR ((biostatistical OR statistical) OR biostatistics))) AND epidemiology. ) OR ( practical guide to statistics AND epidemiology. )).