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 biostatistics AND epidemiology.\\ ) OR ((\\ practical OR \\ practice) guidebook to biostatistical AND epidemiology.\\ ))) OR ((((\\ practical OR \\ practice) guide to 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 biostatistics and epidemiology.\\ ) OR ((\\ practical OR \\ practice) guidebook to biostatistical and epidemiology.\\ ))) OR ((((\\ practical OR \\ practice) guide to statistics and epidemiology.\\ ) OR ((\\ practical OR \\ practice) guide to statistical and epidemiology.\\ ))))~\".
• Adding a wildcard symbol may retrieve word variants: \ (((((\\ practical OR \\ practice) guidebook to biostatistics and epidemiology.\\ ) OR ((\\ practical OR \\ practice) guidebook to biostatistical and epidemiology.\\ ))) OR ((((\\ practical OR \\ practice) guide to statistics and epidemiology.\\ ) OR ((\\ practical OR \\ practice) guide to statistical and epidemiology.\\ ))))~\*.