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