no les importan

they don't care about

→ no
phrase Rare #42,451
they don't care about Used when several things or people do not matter to them. Literally, it means “they do not matter to them”; the thing that does not matter is the grammatical subject, while les refers to the people affected.
SP: No les importan las opiniones de los demás.
EN: They don't care about other people's opinions.

No les importan las miserias que cubren al mundo.

They don't care about the miseries that plague the world.

— Genocidal Organ (2017)

Ya no les importan a nadie.

No one cares about them anymore.

— ¡Vivir! (1994)

A ellos no les importan estas personas, Beirada.

They don't care about these people, Beirada.

— Tropa de élite 2 (2010)

A los sentimientos no les importan los hechos.

Feelings don't care about facts.

No les importan los problemas de los demás.

They don't care about other people's problems.

— El señor de los anillos: La comunidad del anillo (2001)