Language override issue in Italian

Hello, thanks for your module.
I need to override "Apply filter" and "Clear Filter" in Italian. I tried to override but I don't find the relative constant/value (MOD_JLCONTENTFIELDSFILTER_SUBMIT and MOD_JLCONTENTFIELDSFILTER_RESET) in Italian: freeimage.host/i/JvjwAB
Please, how to?
Thanks

If you know language variables, you can simply override it without searching.
Let's say:
MOD_JLCONTENTFIELDSFILTER_SUBMIT

cloud.mail.ru/public/7yy1/Afqaibcof

Thanks a lot.