How do you say “first of all” in Vietnamese?

Vietnamese words for “first of all”

• trước hếtListenadverb
  Hanoi [t͡ɕɨək̚˧˦ het̚˧˦] · Saigon [ʈɨək̚˦˥ həːt̚˦˥]trước rising hết rising

  firstly; first of all

  for “first of all” meaning: Firstly; before anything else.

• trước nhấtListenadverb
  Hanoi [t͡ɕɨək̚˧˦ ɲət̚˧˦] · Saigon [ʈɨək̚˦˥ ɲək̚˦˥]trước rising nhất rising

  first of all; first and foremost

  for “first of all” meaning: Firstly; before anything else.

• trước tiênListenadverb
  Hanoi [t͡ɕɨək̚˧˦ tiən˧˧] · Saigon [ʈɨək̚˦˥ tiəŋ˧˧]trước rising tiên level

  first of all; firstly; foremost

  for “first of all” meaning: Firstly; before anything else.