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