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 guide to biostatistics AND epidemiology.\\\\\") OR (\\\\\"practice guide to statistical AND epidemiology.\\\\\"))*\\\\"\\\"\\"\"".
• Removing quotes may allow a broader search: \ \\ ((\\\ practical guide to biostatistics AND epidemiology.\\\ ) OR (\\\ practice guide to statistical AND epidemiology.\\\ ))*\\ \.