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tinh than » tinh thanh, tinh toan, tinh thai
than khoa » toan khoa, nhan khoa, thai khoa
bac tinh » bac ninh, ban tinh, dac tinh
khoa hoc » hoa hoc
tu bac » tu ban, tu cac, tu bat
tinh than » tinh thanh, tinh toan, tinh thai
than khoa » toan khoa, nhan khoa, thai khoa
bac tinh » bac ninh, ban tinh, dac tinh
khoa hoc » hoa hoc
tu bac » tu ban, tu cac, tu bat
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