Please help me check my grammar in this sentence

After graduated from University of Science. I was take an exam in order to entrance in Master program (before I got a scholarship from Korea) and at the same time I became an official teacher in Huynh Van Nghe middle school, Ho Chi Minh city from 2013 to 2014. I love teaching also and have ability to explain, pursue other side to follow my ideas. During four years studying at University of Science in Viet Nam, I was an English tutor at Ho Chi Minh City. In the evening time after finish class at University I had worked part-time job at Cashier position in Cash & Carry Metro Hiep Phu, I had take care of payment of company including wholesaler and retailer, made a statistical report every day.