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• Performing a fuzzy search may retrieve terms with similar spellings: (((("practice guidebook to statistical and epidemiology.") OR ("practical guidebook to biostatistics and epidemiology."))) OR ("practical guide to statistics and epidemiology."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"practice guidebook to statistical and epidemiology.\") OR (\"practical guidebook to biostatistics and epidemiology.\"))) OR (\"practical guide to statistics and epidemiology.\"))*".
• Removing quotes may allow a broader search: (((( practice guidebook to statistical and epidemiology. ) OR ( practical guidebook to biostatistics and epidemiology. ))) OR ( practical guide to statistics and epidemiology. ))*.