Yes. You will need to first present the store vouchers and/or gift cards and then use the E-voucher for the remaining amount of the order.
If the E-voucher has sufficient balance for the payment of the order and it is presented first during payment, then the entire order amount will be paid for by the E-voucher.
In the event that the E-voucher balance is not enough to pay for the order and it is presented first during payment, the entire balance of the e-voucher will be deducted for payment. The remaining balance amount of the order will have to be paid via other modes.