Take bus No.812 at Tianjin Vocational College to Beicang/Beicang Auditorium/Beichen Hospital/Beichen Chinese Medicine Hospital/Chemical Building/Le Jia Beichen Store (CR Vanguard Beichen Store)/Mazhuang/Tianmu Village, and transfer to bus No.810 to the bus stop of West Railway Station.
Option 2 (about 40 stops)
Take bus No.812 at Tianjin Vocational College to No.92 Middle School/Liutan/Brick Factory [Beichen], and transfer to bus No.810 at West Railway Station.
The fares of these three buses are all 1.5 yuan.
I hope I can help you.