Python - if statements and logical operators

Question

I'm trying to do an if statements. This working fine :

    with open(f, "r", encoding='mbcs') as csvfile:
        reader = csv.reader(csvfile, delimiter='|')
        for row in reader:

            if 'codeclient' not in row[0]:
            
                
                print ("Not found") 
             else:
                print (row[0])

This one works too (see the difference)

    with open(f, "r", encoding='mbcs') as csvfile:
        reader = csv.reader(csvfile, delimiter='|')
        for row in reader:

            
            if 'ANONYM' not in row[3] :
                
                print ("Not found") 
             else:
                print (row[0])

But I'd like to check the content of two conditions like this,but it does not work

    with open(f, "r", encoding='mbcs') as csvfile:
        reader = csv.reader(csvfile, delimiter='|')
        for row in reader:

            if ('codeclient' not in row[0]) or ('ANONYM' not in row[3]) :
            
                
                print ("Not found") 
             else:
                print (row[0])

How could I check the 2 condition like this?

Many thanks