Hi,
Thise are either coming from front-end filters, or taxonomy type exclusions. Check your taxonomy filters page and make sure it is empty. The filters are effective even when not visible (it is intended for different reasons), so it is best to remove all of them, if they are not used.
If you are using taxonomy term based exclusions/inclusions, then I recommend using only one of them – where you need the least amount of terms.
It is more likely the first case, because of the large number of termest parameters.