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