Nh\u1eefng tay ch\u01a1i l\u00e3o luy\u1ec7n trong s\u1ed1 h\u1ecdc lu\u00f4n c\u00f3 nh\u1eefng b\u00ed k\u00edp b\u00ed m\u1eadt ri\u00eang. Trong nh\u1eefng b\u00ed k\u00edp gi\u00fap cao th\u1ee7 h\u1ed1t b\u1ea1c ph\u1ea3i k\u1ec3 \u0111\u1ebfn b\u1ea1c nh\u1edb x\u1ed5 s\u1ed1 mi\u1ec1n B\u1eafc \u0111\u1eb7c bi\u1ec7t l\u00e0 quy lu\u1eadt c\u1ee7a nh\u1eefng c\u1eb7p l\u00f4 hay ra c\u00f9ng nhau. D\u1ef1a v\u00e0o s\u1ef1 tr\u00f9ng h\u1ee3p gi\u1eefa nh\u1eefng con s\u1ed1 t\u1eeb \u0111\u00f3 ch\u1ecdn ra c\u00e1ch \u0111\u00e1nh l\u00f4 th\u00edch h\u1ee3p nh\u1ea5t. \u0110\u00e2u l\u00e0 th\u1ed1ng k\u00ea ch\u00ednh x\u00e1c c\u00e1c c\u1eb7p l\u00f4 hay \u0111i c\u00f9ng nhau \u2013 Lo ra cung nhau xsmb, h\u00e3y t\u00ecm hi\u1ec3u ngay trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y nh\u00e9.<\/p>\n
T\u1ed5ng h\u1ee3p kinh nghi\u1ec7m ch\u01a1i l\u00f4 \u0111\u1ec1 l\u00e2u n\u0103m v\u00e0 th\u1ed1ng k\u00ea ch\u00ednh x\u00e1c nh\u1eadn ra nh\u1eefng quy lu\u1eadt v\u1ec1 c\u1eb7p l\u00f4 ( \u0111\u1eb7c bi\u1ec7t nh\u1eefng c\u1eb7p l\u00f4 n\u00e0y kh\u00f4ng quan tr\u1ecdng quy lu\u1eadt tu\u1ea7n hay th\u00e1ng). Quan ni\u1ec7m nh\u1eefng c\u1eb7p s\u1ed1 kh\u00f4ng ra \u0111\u01a1n l\u1ebb m\u00e0 ra c\u00f9ng nhau minh ch\u1ee9ng r\u00f5 r\u00e0ng h\u01a1n cho ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea n\u00e0y:<\/p>\n