According to the Greyhound website (if you search through "book a trip"), there are 3 buses every day from Bloomington, IN to Indianapolis, IN:
It looks like the schedule numbers are constant and do not depend on the day. I tried looking up these schedules on bus tracker and got "No schedules found". And if I try searching through "SEARCH BY DEPARTURE CITY OR ARRIVAL CITY" instead of "SEARCH BY SCHEDULE NUMBER", there are no buses from Bloomington, IN. Also, these 3 routes are not displayed in this list.
Is this some kind of bag with the Greyhound website? Does the the tracking option not work for this route?