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