Finding subtitles for specific old "scene" releases like can be tricky because the exact ETRG file may not be listed on every site. However, subtitles for the "UNRATED" version are generally interchangeable across different HDRip or BRRip releases of the same edit.
You can find and download subtitles for this version at the following sources: subtitle Trainwreck 2015 UNRATED HDRip XViD ETRG
Use the key to delay or 'G' key to speed up the subtitle timing by 50ms increments until it matches the audio. Trainwreck 2015 BrRip.RARBG english subtitles - MSubs.net Finding subtitles for specific old "scene" releases like
: Features English subtitles for the UNRATED BRRip XviD , which is highly likely to share the same timing as your HDRip. Trainwreck 2015 BrRip
: Provides a comprehensive list of languages for the UNRATED cut, which should align with your HDRip.
: Another alternative for English SRT files for the 2015 release. Quick Tip for Syncing