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