Hi\u1ec7n nay c\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1ch d\u1ef1 \u0111o\u00e1n l\u00f4 \u0111\u1ec1 kh\u00e1c nhau, trong \u0111\u00f3 ph\u01b0\u01a1ng ph\u00e1p soi l\u00f4 b\u1ea1c nh\u1edb<\/b> l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f2i h\u1ecfi nhi\u1ec1u kinh nghi\u1ec7m v\u00e0 \u0111\u1ea7u t\u01b0 th\u1eddi gian nh\u1ea5t trong t\u1ea5t c\u1ea3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p. Sau \u0111\u00e2y ch\u00fang t\u00f4i s\u1ebd h\u01b0\u1edbng d\u1eabn cho c\u00e1c b\u1ea1n c\u00e1ch \u00e1p d\u1ee5ng b\u1ea1c nh\u1edb l\u00f4 \u0111\u1ec1<\/strong> \u0111\u1ec3 \u0111\u00e1nh l\u00f4 \u0111\u1ec1 hi\u1ec7u qu\u1ea3 thu l\u1ee3i nhu\u1eadn l\u1edbn.<\/p>\n Tr\u01b0\u1edbc khi t\u00ecm hi\u1ec3u nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, ch\u00fang ta c\u1ea7n bi\u1ebft soi l\u00f4 b\u1ea1c nh\u1edb<\/b> l\u00e0 g\u00ec.<\/p>\nSoi l\u00f4 b\u1ea1c nh\u1edb l\u00e0 g\u00ec?<\/b><\/h2>\n
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