You can find the specific file Southland.Tales.2006.720p.Bluray.x264-SEPTiC on platforms like Shooter (Pseudo) , which hosts various versions including English and Simplified Chinese (.srt format).
Other common places to look for this specific release include: subtitle Southland.Tales.2006.720p.BluRay.x264....
: Often the most comprehensive database for older Blu-Ray rips. You can find the specific file Southland
The search results show that subtitles for matching the 720p.BluRay.x264 release are available on several subtitle repository sites. subtitle Southland.Tales.2006.720p.BluRay.x264....