Google Search's language filter is painful to use for multi-language users. It only support filtering between All language, Your primary language, and all languages you know. So as an chinese user who also know english, google can only show english and chinese results together, I can not filter English content only.
Consider using the languages set in search settings
Hi! I really like your script, i was going to write the same script but i found yours :)
But i have a problem, i need it for a different set of preferred languages, and i thought your script was reading this list from the language settings. But i see that you hard-coded the list of languages of your choice.
Ill try to modify the script to use the languages set in the search settings and share the code here in case you want to use it to update the script :)
Otherwise can publish it as a new script.