The most reliable way to find this exact match is to use "massive libraries where movie fans upload and rate subtitle files":
: A highly recommended open source for movie subtitles. Why Release Names Matter subtitle The Good Thief.DVDrip.by-Galmuchet
Subtitle files (usually in .srt format) are timed to specific video files. A "DVDrip" by a specific uploader like may have different frame rates or start times compared to a BluRay rip or a streaming version. Using the specific file matched to this release ensures the text stays in sync with the dialogue. If You Can't Find the Exact Match If the "Galmuchet" version isn't listed, you can: The most reliable way to find this exact
Are you having an existing file, or do you need to find a new one entirely? Using the specific file matched to this release
To find the proper subtitle content for the specific release , you should search specialized community-driven databases that host files indexed by release name. Where to Find the File