Have found a few naming errors while playing, look:

Camel entity name is "Cameleiro" which means "camel rider" or something like that, it should be named "Camelo", this only happens with his entity name, his spawn egg and mentions of him on loading tips and how to play sections all use "Camelo". This is the file that causes this:

entity.camel.name=Cameleiro

Bogged spawn egg is named as if it was a spawn egg that is bogged insteant of an egg that spawns a bogged, "Ovo de Invocação Atolado" is used instead of "Ovo de Invocação de Atolado" (very small difference) given the possible explanation for this bug, i think there are some chances that it is not exclusive to brazilian portuguese.

item.spawn_egg.entity.bogged.name=Ovo de Invocação Atolado

The trial explorer map is named "Teste do Mapa do Explorador" (means "test of explorer map" or "explorer map test").

item.map.exploration.trial_chambers.name=Teste do Mapa do Explorador

Certain warped items are named with the word "deformado" and some of them with the word "distorcido", it should all be named with the word "distorcido".

item.warped_fungus_on_a_stick.name=Fungo Deformado no Graveto tile.warped_hyphae.name=Hifas Deformadas
tile.stripped_warped_hyphae.name=Hifas Deformadas Descascadas

Trial related items are all named with the word "teste" (means test), "Câmaras de Teste" (Test Chambers), "Invocador de Teste" (Test Spawner), "Chave de Teste" (Test Key), "Chave de Teste Sinistra" (Ominous Test Key).

feature.trial_chambers=Câmaras de Teste
item.trial_key.name=Chave de Teste
item.ominous_trial_key.name=Chave de Teste Sinistra tile.trial_spawner.name=Invocador de Teste