I would go to these markets in Portland, as the one's in Vancouver are small, limited items, and over priced.
try these:
Fubonn Shopping Center
2850 SE 82nd Ave, Ste #1
Portland, OR 97266
(503) 517-8877
This is the largest Asian Shopping Center in Oregon. It is Chinese-owned and houses a supermarket & deli, bubble tea, a bakery, a noodle house, a couple of restaurants, a beauty salon, clothing stores, jewelry and art stores, a bookstore, a gift shop, a music store, a Shiseido store, and even a Starbucks.
http://www.uwajimaya.com/index.htm
10500 SW Beaverton Hillsdale
Beaverton, OR 97005
(503) 643-4512
This large chain Asian grocery store has locations in Beaverton, Bellevue, and Seattle. It is Japanese-owned, and you'll find lots of fresh produce and seafood. They have an amazing selection of Pan-Asian items. They even offer cooking classes. There is also a bookstore, a restaurant, a travel agency, and a cosmetics store.