On most subtitle databases, users leave "good" or "bad" ratings based on how well the file syncs with the BluRay release.

If the text is slightly off, you can adjust it on the fly:

Search for "Tromeo and Juliet" and look for the entry specifically labeled for the 720p BluRay or AC3 release.

Rename the downloaded .srt file to match your movie file exactly (e.g., Tromeo.and.Juliet.1996.720p.BluRay.AC3.srt ).