This was handy for bulk, confirmed renaming, I used telescope's live_grep feature to put the results in a quickfix list (although any other method for populating a quickfix list would work) and then ran:

:cfdo %s/find/replace/gce | %s/findanother/replaceanother/gce | %s/findyetanother/replaceyetanother/gce | update

to do multiple replacements on the files in the quickfix list and then saved them all with update. I could've saved them all with :cfdo w as well.