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