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 guidebook to (((biostatistics OR statistical) OR (biostatistics OR statistical)) OR (biostatistics OR statistical)) AND epidemiology.\\\") OR (\\\"practical guide to statistics AND epidemiology.\\\"))*\\"\"".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"\\"\\\"((\\\\"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: \ ((\\ practical guidebook to (((biostatistics OR statistical) OR (biostatistics OR statistical)) OR (biostatistics OR statistical)) and epidemiology.\\ ) OR (\\ practical guide to statistics and epidemiology.\\ ))*\.