The Vietnamese student was stabbed in October 2004 in St. Petersburg by a group of drunk teenagers on alleged race-hate motives.
Eight defendants were fully acquitted, and the remaining nine were found guilty of attacking other foreign nationals.
Russia has experienced a wave of attacks on non-white foreigners this year, particularly in St. Petersburg, where an Indian student was stabbed to death and a Sudanese national attacked in September.
Other attacks in St. Petersburg in the past year have included the beating of a Chinese student, and the stabbing of a nine-year-old girl of mixed Russian-African origin in early 2006. A man from Mali was stabbed to death in the city in February, a student from Cameroon was murdered last December, and a Congolese student was killed in September 2005.
Routine attacks by skinheads and youth gangs on foreigners and people with non-Slavic features have also been reported in some other Russian cities.