How do you say “goo goo ga ga” in Vietnamese?

Vietnamese words for “goo goo ga ga”

• bi ba bi bôListenverb
  Hanoi [ʔɓi˧˧ ʔɓaː˧˧ ʔɓi˧˧ ʔɓo˧˧] · Saigon [ʔɓɪj˧˧ ʔɓaː˧˧ ʔɓɪj˧˧ ʔɓow˧˧]bi level ba level bi level bô level

  ‑a reduplication of bi bô

  for “goo goo ga ga” meaning: Onomatopoeic imitation of the sound of a baby who has not yet learned to speak.