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