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