Cantonese Context Accuracy

[TheBlueKingLP]

Hello, I am trying to integrate Whisper into Home Assistant. With some specific sentence/word, I am getting accuracy issue.

For example, if I say "saan1 閂 dang1 燈(turn off the lights)" in Cantonese, with Whisper I get the following output
[00:00.000 --> 00:02.200] 山燈

山燈, pronounced "saan1 dang1" Which literally means "mountain light", which makes no sense.
In Cantonese, the pronunciation is exactly the same as "turn off the lights" (saan1 閂 dang1 燈)
saan1 閂 -> to close/turn off
dang1 燈 -> (the) light(s)

Please note that the above words are not the only issue. There are other words with similar pronunciation, for example, if I say "閂房燈", I get [00:00.000 --> 00:02.200] 山晃燈 from whisper.

房(fong2, means room, implies bedroom when spoken) becomes 晃(fong2, means to sway/to shake) in Whisper

Is there any way to correct this issue?