How do you say “half brother” in Vietnamese?

Vietnamese words for “half brother”

• cùng cha khác mẹListenadjective
  Hanoi [kʊwŋ͡m˨˩ t͡ɕaː˧˧ xaːk̚˧˦ mɛ˧˨ʔ] · Saigon [kʊwŋ͡m˨˩ caː˧˧ kʰaːk̚˦˥ mɛ˨˩˨]cùng falling cha level khác rising mẹ heavy

  for “half brother” meaning: A male half sibling (same dam, different sires).

• cùng mẹ khác chaListenadjective
  Hanoi [kʊwŋ͡m˨˩ mɛ˧˨ʔ xaːk̚˧˦ t͡ɕaː˧˧] · Saigon [kʊwŋ͡m˨˩ mɛ˨˩˨ kʰaːk̚˦˥ caː˧˧]cùng falling mẹ heavy khác rising cha level

  for “half brother” meaning: A male half sibling (same dam, different sires).