Following up on my search: Sao Paulo, BR to Philadelphia, Pennsylvania, US early March 1 stop return 26 days later I am going on about 10 minutes now with no r

Following up on my search: Sao Paulo, BR to Philadelphia, Pennsylvania, US early March 1 stop return 26 days later I am going on about 10 minutes now with no results. So it isn't slow, it is unusable. Also, it seems to make me choose either direct, 1 stop, or 2+ stops. Which seems odd. Why can't I leave that open-ended so I can look for best price?