A popular community-driven site where you can filter by language. Look for the version uploaded by "GoldenBeard" or other high-rated uploaders, as they often include the 720p/1080p BluRay compatibility in the description.
Since the file name matches a common scene release, you can find the exact .srt or .ass file on these major subtitle databases: subtitle Disturbing.Behavior.1998.720p.BluRay.x...
To ensure the subtitle works automatically with your video file: A popular community-driven site where you can filter
If the dialogue doesn't match the audio (which can happen if the BluRay rip has a different frame rate than the subtitle was made for): subtitle Disturbing.Behavior.1998.720p.BluRay.x...
If you are looking for subtitles for the 1998 thriller specifically for the 720p BluRay x264 release, here are the most reliable ways to find and use them: Where to Find the Subtitle File
Search for "Disturbing Behavior 1998" and look for entries tagged with "BluRay" or "x264." These are usually perfectly synced for high-definition rips.