deveriam ser

should be

→ dever
phrase Rare #39,850
should be Used to express what people or things ought to be or are expected to be. The form “deveriam” refers to “they” or other plural subjects.
PO: Os documentos deveriam ser disponibilizados online.
EN: The documents should be available online.

Em Tatoeba há muitas frases úteis e bonitas que deveriam ser adotadas.

In Tatoeba there are many useful and beautiful phrases that should be adopted.

Mas eles deveriam ser vistos ganhando agora mesmo.

But they should be winning right now.

— Yojimbo, o Guarda-Costas (1961)

Eles deveriam ser ignorados.

They should be ignored.