Chamnien Moonkasorn was born in 1968 in the Selaphum district, Roi Et province where he started Muay Thai training at the age of 9. He fought for the Kiatbanhan gym under the name Detduangnoi Kiatbanhan until the age of 12 when he joined the Por.Pongsawang camp in Bangkok alongside his brothers Tukatathong and Detduang. Dokmaipa debuted in the major Bangkokg stadiums at the age of 16. He rapidly became a notable champion known for his powerful left leg under the Onesongchai promotion. He won the
Lumpinee Stadium titles in the 112 lbs and 115 lbs divisions in 1987 and 1988, defeating champions
Burklerk Pinsinchai,
Wisanupon Saksamut and
Wangchannoi Sor Palangchai. At his peak he received purses of more than 120,000 baht. Some of the most notable opponents he defeated were
Paruhatlek Sitchunthong,
Boonlai Sor.Thanikul,
Oley Kiatoneway,
Karuhat Sor.Supawan,
Nungubon Sitlerchai,
Yodkhunpon Sitraipum,
Saenklai Sit Kru Od and
Kaensak Sor.Ploenjit. After his fighting career Dokmaipa spent years as a trainer in Macao before returning to live in his native province. On October 6, 2020, Dokmaipa was brought to the hospital following blood infection symptoms caused by a centipede wound. He fell into a coma and was pronounced dead on October 7, 2020, at the Kalasin province Hospital. ==Titles==