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