Search query: label/H%E1%BA%ADu qu%E1%BA%A3 n%C3%A0o khi Vi%E1%BB%87t Nam kh%C3%B4ng %E1%BB%A7ng h%E1%BB%99 %E2%80%98B%E1%BB%99 T%E1%BB%A9%E2%80%99 trong khu v%E1%BB%B1c%3F