Is it possible to show a list of posts by a particular subset of users?

E.g. with subreddits, I can view multiple ones at once with /r/aww+cows (for /r/aww and /r/cows), but I can’t find a way to do the same for multiple people (I guessed that /u/ketralnis+spez might work, but it didn’t). Adding all of the requested people to my friends list would work, but isn’t ideal. Any suggestions?

^{Edit: sorry – I might have just tagged ‘ketralnis’.}