You can, unfortunately they do not go on the permanent record (if a dealer ran a Carfax at trade in for example) but they are handy for the owner.You can also use Carfax I believe and upload your own service records for those that are looking for more than receipts/spreadhsheet type records.
You can also use this feature for a free partial Carfax by adding a potential purchase vehicle to your garage. It's not very detailed, but you can see some service history for no charge.