c\u00e1ch t\u00ednh c\u01b0\u1ee3c xi\u00ean b\u00f3ng \u0111\u00e1<\/strong><\/a>. N\u1ebfu bi\u1ebft c\u00e1ch ch\u01a1i c\u00e1c b\u1ea1n s\u1ebd d\u1ec5 d\u00e0ng gi\u00e0nh \u0111\u01b0\u1ee3c chi\u1ebfn th\u1eafng. Nh\u01b0ng n\u1ebfu ch\u01b0a bi\u1ebft c\u00e1ch ch\u01a1i th\u00ec t\u1ef7 l\u1ec7 thua c\u01b0\u1ee3c s\u1ebd r\u1ea5t cao.<\/p>\nC\u00e1ch c\u01b0\u1ee3c xi\u00ean trong b\u00f3ng \u0111\u00e1 kh\u00f4ng qu\u00e1 kh\u00f3 nh\u01b0ng n\u1ebfu kh\u00f4ng t\u00ecm k\u1ef9 c\u00e0ng c\u00e1c b\u1ea1n s\u1ebd kh\u00f4ng th\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd cho c\u00e1c b\u1ea1n bi\u1ebft c\u01b0\u1ee3c xi\u00ean l\u00e0 g\u00ec v\u00e0 c\u00e1ch t\u00ednh c\u01b0\u1ee3c xi\u00ean nh\u01b0 th\u1ebf n\u00e0o nh\u00e9.!<\/p>\n[toc]\n