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