Perhaps you should try some spelling variations:
"Cardiac arrest" » "Cardiac arresto", "Cardiac arrese", "Cardiac agrest"
"Cardiac arrestar" » "Cardiac arrestoar", "Cardiac arresear", "Cardiac agrestar", "Cardiac arrestado", "Cardiac prestar", "Cardiac arresto"
"Cardiac agrestar" » "Cardiac aprestar", "Cardiac prestar", "Cardiac agregar"
"Cardiac arreseo" » "Cardiac arresto", "Cardiac arrese", "Cardiac arrested"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("Cardiac arrest") OR ((("Cardiac arrestar") OR ("Cardiac agrestar"))))) OR ("Cardiac arreseo"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Cardiac arrest\") OR (((\"Cardiac arrestar\") OR (\"Cardiac agrestar\"))))) OR (\"Cardiac arreseo\"))".
• Removing quotes may allow a broader search: (((( Cardiac arrest ) OR ((( Cardiac arrestar ) OR ( Cardiac agrestar ))))) OR ( Cardiac arreseo )).
• Adding a wildcard symbol may retrieve word variants: (((("Cardiac arrest") OR ((("Cardiac arrestar") OR ("Cardiac agrestar"))))) OR ("Cardiac arreseo"))*.