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