Search number in Python text

Question

I developed a python code to search for number inside an excel file, where it has about 40 thousand data. I made a rule to bring myself only number 9 to 14, where I would classify it as phone. However besides having these phone data other numbers related to note that has 9 numbers.. Then he brings me many things of note and the telephone does not. In the text is type tel(19).... phone(19).... Could you give me a hint as to how I can make him read the string and finds type tel and from that point it records only the number.

import pandas as pd

import re

df = pd.read_excel('log1.xlsx')

df['CONTEM TELEFONE']=""

df['telefone']=""


for i in range(len(df)):

    print( i)


    t=(str (df['Observação'][i]).split(" "))

    contador =0

    contador4 =0

    while (contador <len(t)):


      if(len (t [contador])>=9 and len (t [contador])<=14):

       #print (str(t[contador]).replace("-","").replace("(","").replace(")","").replace(",",""))"

              entrada = (str(t[contador]).replace("-","").replace("(","").replace(")","").replace(",","").replace(".",""))

      contador3 = 0

      confere = 0

    while (contador3 < len(entrada)):

             if entrada[contador3:contador3+1].isdigit() == True:

                   confere = confere + 1

                   contador3 = contador3 + 1

                   if confere == len(entrada):

                      df['CONTEM TELEFONE'][i]= "sim"

                      if confere != len(entrada):

                         df['CONTEM TELEFONE'][i] ="não"

                         contador4 = contador4+1

                         if confere == len(entrada):

                          df['CONTEM TELEFONE'][i]= "sim"

                          if contador4>1:

                           df['telefone'][i] = df['telefone'][i]+";"+entrada 

                          else:

                           df['telefone'][i] = entrada 

    contador=contador +1