Hanoi, May 13 -- All four Vietnamese students competing in the 59th Mendeleev International Chemistry Olympiad have won medals, including two golds and two silvers, according to the Ministry of Education and Training.

The two gold medallists are Tran Trung Kien, a 12th grader from the Hanoi-Amsterdam High School for the Gifted, who scored 169.25 points, and Nguyen Ngo Duc, a 12th grader from the Phan Boi Chau High School for the Gifted in Nghe An province, who scored 151.05 points.

The silver medals went to Dinh Trong An, a 12th grader from the the High School for Gifted Students in Natural Sciences, under the Vietnam National University, Hanoi, with 149.70 points; and Tran Hoang Nam, an 11th grader also from the Hanoi-Amsterdam High Sc...