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