T\u1ed5ng h\u1ee3p c\u00e1c ki\u1ebfn th\u1ee9c tr\u1ecdng t\u00e2m gi\u00fap b\u1ea1n \u0111\u1ea1t \u0111i\u1ec3m 8 ch\u1ec9 trong 1 th\u00e1ng \u00f4n thi<\/a><\/blockquote><\/iframe>