Recognizing special characters such as "ç" or "ã"

I'm using textread to read a word list written with Portuguese specific characters (such as "ç" or "ã"). Unfortunately, Matlab seems not to recognize such characters - in reads 'mundializa??o' or alike instead of "mundialização" (I do not know why, since in older versions I do not had this problem). Any clue about what I have to to do solve this situation?

Thank you very much.

[Stephen23]

C = readcell('test.txt')

C = 1×1 cell array
    {'ãbçd'}

S = readlines('test.txt')

S = "ãbçd"

T = fileread('test.txt')

T = 'ãbçd'

Please upload a sample data file by clicking the paperclip button.

[Luis Faisca]

Thank you - I just added a "teste.txt" file with Portuguese words with special characters. Please, check. What my Matlab prints is

{'abafadi?o' }

{'abal?vel' }

{'abalroa??o'}

[Luis Faisca]

Perhaps this could be an idiosyncrasy of the "textread" function. If I use the "readcell" function, as you suggested, special characters are recognized.

Thank you for help, I will proceed with "readcell".