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