You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"practical guidebook to biostatistics and epidemiology.\") OR (((\"practical guidebook to statistical and epidemiology.\") OR (\"practical guide to statistical 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 statistical and epidemiology. ) OR ( practical guide to statistical and epidemiology. ))))) OR ( practice guide to statistics and epidemiology. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("practical guidebook to biostatistics and epidemiology.") OR ((("practical guidebook to statistical and epidemiology.") OR ("practical guide to statistical and epidemiology."))))) OR ("practice guide to statistics and epidemiology."))*.