You can turn the tool to work the cable more to the right or more to the left to try to work out all of a big clog. If you have a septic tank, that may need cleaning out. If it is the main drain in the house, there is usualy a cleanout at the farthest end of the drain, a plug that lets you feed an auger in without going through any traps. You find this in the basement or crawlspace. This would be work for a power auger, which can be rented for the job.
Electric augers are big with a lot of cable.
If augering the main drain in the house doesn't help, then augering the drain from the house to the outside would be next. There is usualy a cleanout just below the point where the main drain leaves the house. Remove the cap and start augering again. When using a power auger you won't be cranking, so you won't feel resistance when you get to the clog. You will hear the motor start to slow, and that is when you need to reverse the motor and back out, going back and forth till you cut through the clog.