Hi all- trying to book REP (siem reap) to DAD (danang) on January 5 2015. Matrix shows a 600 000 VND ++ fare- can get anywhere near that on any bookable search engine that i can find- all assistance greatly appreciated!
I had similar experience. I checked with travel agent, who could replicate the routing and fare from ita matrix, but she added an extra $100. Eventually I found the fare on 3rd party site, but I had to buy 1 ticket from Expedia and 1 ticket from Orbitz.