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