The `search` path already allows more than 5 tags, and it uses ***OR*** logic.  From [the docs][1]:

> tagged and nottagged are **semi-colon delimited** list of tags. At least 1 tag in tagged will be on each returned question if it is passed, making it **the OR equivalent** of the AND version of tagged on /questions.

(bold added)

Note that tags are separated with a semicolon, not a comma.  So, you would use:

    /2.1/search?pagesize=100&page=1&order=desc&sort=creation&tagged=linux;ubuntu;bash;linux-mint;mint;linux-distributions;linux-distro;archlinux&site=superuser&filter=.Ericv1w97*YhCWfY.uMVBr(o

[which works fine][2].


  [1]: https://api.stackexchange.com/docs/search
  [2]: https://api.stackexchange.com/docs/search#page=100&order=desc&sort=creation&tagged=linux%3Bubuntu%3Bbash%3Blinux-mint%3Bmint%3Blinux-distributions%3Blinux-distro%3Barchlinux&filter=!9hnGswtTz&site=superuser&run=true