That thread points to https://extensions.openoffice.org/en/project/czech-dictionary-pack-ceske-slovniky-cs-cz, but you can search the site for a Norwegian one to see if it works. https://extensions.openoffice.org/en/project/norwegian-dictionaries-spell-checker-thesaurus-and-hyphenation might be it, but didn't check.
Do more on the web, with a fast and secure browser!
Download Opera browser with:
- built-in ad blocker
- battery saver
- free VPN