Hola Marcos

I'm not sure you'll find the verbs with the "le" attached in the dicctionary as an entry, maybe the reflexive forms with se, depending on the dictionary. If you find the basic form of the verb, e.g. prestar, you will probably find all usages of this verb and one will include the use of "prestarle algo a alguien", with a bit of luck with some examples to illustrate this usage. 

Saludos