Use or VLC → Tools → Track Synchronization:
Finding a working standalone download for RangiTaranga English subtitles can be tricky due to fluctuating availability on third-party sites. However, you can access the movie with English subtitles through reliable official channels: rangitaranga+english+subtitles+download+work
If you already have the movie file and just need the standalone subtitle file (usually in .srt format), these sites are the most reputable for finding them: Use or VLC → Tools → Track Synchronization: