Two tracks still need two names
“Dual audio” is useful only when you know which languages the edition contains. It does not automatically mean Hindi and English, and it does not identify the film's cut or release year. Find the title in search, confirm the cast and check the named tracks on the viewing service.
Original language is a catalog filter
Selecting Tamil in the catalog finds productions recorded with Tamil as their original language. It does not reveal every Hollywood film that might have a Tamil dub. Likewise, a Hindi dub does not change the original-language identity of a Telugu or Tamil production. Keep the film's identity and the edition's soundtrack as separate choices.
When the dubbed title is different
Use the year, lead actor or original title to bridge the gap. A translated name can be shared by more than one release. The details page gives you a cast and synopsis to compare before you continue. If the audio menu lacks the language you need, inspect another available edition rather than repeatedly changing the catalog filter.
Subtitles can be a useful alternative when you prefer the original performances or cannot find a suitable dub. See the subtitle guide for caption and readability choices.