Trung was elected in the 2020 Local Government election and served as a ward Councillor at Brimbank City Council.

He was successfully elected to Parliament at the state election in November 2022.

Shortly after election, Luu was immediately elevated to shadow Parliamentary secretary for Multicultural Affairs in John Pesutto's shadow cabinet in December 2022. 

Trung arrived in Australia as a refugee in the late 1970s from Vietnam after the fall of Saigon. He served for 28 years with Victoria Police and championed bridging the gap between the Vietnamese Community and Victoria Police where he presented the Victoria Police Multicultural Media award in 2010.  Trung has also completed a Graduate Diploma in Public Safety and Forensic Investigation.

Trung also served for 19 years with the Australian Army Reserve. 

In 2019 bushfire assists, Trung led a team of mobile units in the Alpine area, northwest of Victoria, assisting local authorities and evacuating residents from the fire fronts.

Trung is married with five young children.