You can use WHOIS Privacy to hide your personal information in the WHOIS database. If someone searches for your domain, then they will not be able to see your contact information.
To hide your WHOIS information, you need to login to Sombha and then navigate to Members Area. Now click on Domain located at the top of the screen and choose one of the Order buttons. Now you will be redirected to the payment page where you can choose your payment method for availing WHOIS Privacy.
Do remember that some WHOIS listings take time to update the changes. So someone may see your details before it becomes hidden.