Yes, you can.
133N . * UNLIMITED CHANGES PERMITTED WITHOUT CHARGE.
134N AFTER DEPARTURE
135N .
136N . * CHANGES TO THE FIRST INTERNATIONAL FLIGHT AND
137N . TO PRECEDING FLIGHTS ARE NOT PERMITTED.
138N . * DATE/TIME CHANGES ARE PERMITTED AT NO CHARGE.
139N . * ALL OTHER ROUTING CHANGES ARE PERMITTED AT A
140N . CHARGE OF USD 75.00 PER TRANSACTION. IF CURRENCY
141N . OF TICKET ORIGIN IS NOT USD, CONVERT THE USD
142N . AMOUNT AT THE BSR.
143N . * THE NUMBER OF CONTINENTS/EXTRA FLIGHT SEGMENTS
144N . MAY BE INCREASED/DECREASED. THE PASSENGER WILL BE
145N . CHARGED/REFUNDED ACCORDINGLY.
146N -------------------------------------------------------
147N . NOTE
148N IF THE CHANGE RESULTS IN A REFUND, A MCO WILL BE
149N ISSUED FOR A REFUND IN THE COUNTRY OF SALE. ANY
150N APPLICABLE CHANGE FEE WILL APPLY.
MCO(Miscellaneous Charge Order) can be handled in the country of sale(e.g. cuontry of origin).