This is the 9954th most frequent Spanish word.
buscarla
"Buscarla" means "to look for her/it."
In this case, 'buscarla' combines the verb 'buscar' (to look for) with the pronoun 'la' (referring to 'her'), indicating the subject is going to search or retrieve the person being referred to as 'her'.
Voy a buscarla después del trabajo.
I am going to look for her after work.
Here, 'buscarla' combines the action of 'buscar' with the pronoun 'la', which in this case refers to the key, indicating a careful search action for the object.
Cuando no encuentres la llave, tendrás que buscarla con atención.
When you don't find the key, you will have to look for it carefully.
In this sentence, 'buscarla' refers to the map (although implicitly mentioned through 'la'), implying there is no need to engage in the act of searching for it because its location is known.