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