Search plugin problem: strange characters.

[mandoju]

Hi,
I'm using fabrik 3.3.2 with joomla 3.4.1 . When i do a search using joomla search, the titles of fabrik forms appears with strange characters like "Geração de Colunas para o Problema de Empacotamento de Árvores de Steiner" . The problem is with characters like "?" , "?" , "?" , and i don't know where is the problem, since joomla articles are fine, and the description of Fabrik forms are fine too.

Thanks.