look into
US /lʊk ˈɪntuː/
UK /lʊk ˈɪntuː/

1.
investigar, examinar
to investigate or examine something, especially a problem or a complaint
:
•
The police are going to look into the matter.
La policía va a investigar el asunto.
•
We need to look into why sales have dropped.
Necesitamos investigar por qué han bajado las ventas.