\u0110\u1ec1 k\u00e9p l\u00e0 hai con s\u1ed1 \u0111\u1ec1 l\u1eb7p l\u1ea1i c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u00ed d\u1ee5 \u0111\u1ec1 s\u1ed1 00 11 22 33 44 55\u2026.\u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u1ec1 k\u00e9p. V\u1eady d\u1ea5u hi\u1ec7u \u0111\u1ec1 b\u00e1o v\u1ec1 k\u00e9p nh\u01b0 th\u1ebf n\u00e0o ? C\u00e1ch b\u1eaft \u0111\u1ec1 k\u00e9p chu\u1ea9n nh\u1ea5t v\u00e0 d\u1ea5u hi\u1ec7u \u0111\u1ec1 k\u00e9p nh\u01b0 th\u1ebf n\u00e0o? D\u01b0\u1edbi \u0111\u00e2y ch\u00fang t\u00f4i s\u1ebd chia s\u1ebb cho b\u1ea1n nh\u1eefng kinh nghi\u1ec7m v\u00e0 t\u1ed5ng h\u1ee3p t\u1eeb c\u00e1c cao th\u1ee7 l\u00f4 \u0111\u1ec1 chu\u1ea9n nh\u1ea5t gi\u00fap b\u1ea1n b\u1eaft \u0111\u01b0\u1ee3c \u0111\u1ec1 k\u00e9p chu\u1ea9n cho m\u00ecnh.<\/p>\n
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