If you want a cheap flight from Abu Dhabi to São Paulo, you've got zero airlines to choose from.
You can use the filters on your search to see more flights and find cheaper rates – São Paulo has more than one airport. So if you don't need to fly into São Paulo Congonhas International Airport, it's worth checking your other options.
If you're planning on going to São Paulo during this time, you could take a look at other airport options. Or you could try to get a last-minute bargain.