Complex sentence: In 2005 Sing went to England for 1 month to fight and to teach Muay Thai in Birmingham at Trojan Gym and also won the KOMA event in Korea.
Split into simpler sentences: In 2005 Sing went to England for one month to fight and to teach Muay Thai in Birmingham, at Trojan Gym. That year, he also won the KOMA event in Korea.