Second Search - PyZap

def second_search(first_search_words, search_terms):
    """Recibe el diccionario en ram con las first_search_words para
    refinar la busqueda.

    Primero se eliminan los resultados que tengan menos coincidencias que
    numero de caracteres. Posteriormente, cada palabra es separada en
    caracteres, y se comparan uno a uno con las letras escogidas en el run.

    Regresa una lista de palabras.

    """

    flagged_for_deletion = []

    for word in first_search_words:
        if first_search_words.get(word)[0] < first_search_words.get(word)[1]:
            flagged_for_deletion.append(word)

    for word in flagged_for_deletion:
        del first_search_words[word]

    used_chars = []
    final_words = []
    keys = first_search_words.keys()

    for word in keys:

        available = list(search_terms)
        used_chars[:] = []
        actual_word = list(word)

        for current_char in actual_word:
            if current_char in available:
                used_chars.append(current_char)
                available.remove(current_char)

        sorted(actual_word)
        sorted(used_chars)
        available[:] = []

        if actual_word == used_chars:
            final_words.append(word)

    return final_words