Defending champions France lost to Senegal, Argentina lost to England and Italy went down 2-1 to Croatia.
But Scolari thinks all three teams have what it takes to make the second round.
"I think France, Argentina and Italy will all qualify," he said
at the Brazilian team hotel in Ulsan.
"I think tradition, quality, the difficulties they had in the
first two games will give them determination for the third match and I think all three will move to the next round."
Confidence in Brazil is growing. An opinion poll carried out by the Folha de Sao Paulo daily newspaper has 57% of people saying that Brazil will win an unprecedented fifth title.