C\u00e1c c\u00e1ch xem hai s\u1ed1 cu\u1ed1i gi\u1ea3i \u0111\u1eb7c bi\u1ec7t xsmb<\/strong><\/h3>\n<\/li>\n<\/ul>\nTheo kinh nghi\u1ec7m c\u1ee7a ch\u00fang t\u00f4i, hai s\u1ed1 cu\u1ed1i gi\u1ea3i \u0111\u1eb7c bi\u1ec7t xsmb s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh theo: Tu\u1ea7n, th\u00e1ng, qu\u00fd v\u00e0 n\u0103m. Ngo\u00e0i ra, hai s\u1ed1 cu\u1ed1i gi\u1ea3i \u0111\u1eb7c bi\u1ec7t xsmb c\u0169ng \u0111\u01b0\u1ee3c t\u00ednh theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t trong v\u00f2ng 60 ng\u00e0y, 90 ng\u00e0y, 100 hay 200 ng\u00e0y.<\/p>\n