Macbook Pro 2013 to connect to 3 screens is not?

Un
- in Macbook
1

Have the 3 screens once connected from HDMI to HDMI and 2 times from DisplayPort to Mini DisplayPort.
The problem, only 2 screens are controlled, even if the laptop folded.
Is there anything you can do there?

Gi

Guess the computer is meant for just two more monitors. Is only a laptop