In my search for information on this plant, I found many recipes for chutney that included coriander leaves. It's a wonderful plant for the kitchen or container garden. The attractive, dark, shiny, pointed leaves and reddish stems give an added interest to any garden. Plant this herb where you can appreciate the aroma of the leaves. Just a light brushing emits a wonderful scent, much like thyme or rosemary does.
Vietnamese coriander likes full sun and well-drained soil.
I would suggest partial shade to shade for the container garden. The plant is tender and will need to be brought in, but once inside is not fussy about its environment. One item that baffles me about this plant is that it never goes to seed, just foliage. Perhaps I'll never know. I've never tried to propagate Vietnamese coriander, but it seems suitable for cuttings or root division.