Repetition of pronouns together with verbs or nouns in one sentence

Question

I was wondering - if there are several verbs/nouns in one sentence and also I want to use any pronoun (direct object pronoun, indirect object pronoun, demonstrative pronoun, etc.), do I HAVE to ALWAYS repeat pronoun with each verb? Should it be like in case of definite articles (example below)? Or you can use several verbs and attach pronoun to first verb only (if you like)?

We're selling the house and chair. = Vendemos la casa y la silla.

My guess is that for some pronouns you are NOT required to attach the same pronoun to each verb/noun, but you CAN attach (IF you like), for the purpose of making the overall sentence sounding more "stronger". But this is only guess. So far I saw for DO (direct object) pronoun that it is repeated (example below):

From Movie Venganza (Taken), year 2008: "Si no lo hace, le buscaré, le encontraré y le mataré." [here is an apparent case of Leísmo (should be "lo" in all cases), but this is a different topic.]

I am asking about all the types of pronouns (for example, demonstrative "esta" with nouns, possesive pronouns with nouns), not only DO or IO pronouns.

For example, in a sentence below which I came up with myself, I believe I have to attach possessive pronouns to both nouns and it will be correct:

These are my chair and table - Estas son mi silla y mi mesa

Answer 1

First, note that most of your examples are not pronouns but determinants. Pronouns replace a noun; determinants introduce and accompany it.

That said, the answer in both cases is yes:

• if one verb affects several nouns, each noun must have its corresponding determinant. This is not even repeating, as different nouns might require different determinants:

  He comprado esta mesa y esta silla.

  He traído el bolígrafo y la pluma.

• if several verbs apply to the same object, and this object is a pronoun, then the pronoun must be repeated next to every verb:

  Me lo encontré en la calle, lo miré y lo abracé.

  Furthermore, if several verbs apply to the same object and the object is a noun, all verbs that come after the noun must have the pronoun:

  Escribe la carta, fírmala, métela en un sobre y envíala.

  However, verbs that come before the noun they refer to do not require a pronoun:

  Escribe, firma y envía la carta.

Note: in some very specific cases, when the two verbs or the two nouns are very closely related, it might be possible to omit the pronoun/determinant in the second one:

Tus sillas y mesas son todas nuevas.

Lo juzgaron y condenaron por asesinato.

As far as I know, these are indeed very specific cases, and repeating the pronoun/determinant is also allowed in these cases. Repeating is always a safe choice.