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