Filter on "already translated"

Hello, i’ve to make some clones of translated blogs in 3 other languages and they will be migrated on other domains. I don’t need to translate the 700+ strings of my template but less than 100, so some of them can be found all over the pages…
Is there any way to filter on “translated” strings please ? That would be really useful when you have to modify translated content.

Thanks !

https://www.ads-software.com/plugins/codestyling-localization/