He is among nine farmers who were invited by the Ministry of Technology and Science to the Technology and Equipment Fair (Vietnam Techmart 2003). These individuals have been praised for their innovations.

Mr Tam was born into a poor family in My Hiep commune, Phu My district, Binh Dinh province. He had to work for farm owners in Gia Lai, Dak Lak provinces from the age of 15, gaining some experience in using modern equipment. During operation, he also found the machinery's weak points which could be improved for better performance. He suggested his ideas to the owners who refused because they thought that such a young boy, who had only completed the fifth grade, could not make it better.

He decided to go to the new economic zone in Cat Tien in Lam Dong province. There he worked hard on the two hectares of land which had been given to him. However, he could not cut grass on the land with his hands because it grew quickly. He saved money to buy a grass-cutting machine at a price of VND 1.8 million. The machine could gather 20-30% of the grass at one side. An idea came up to him to transform the machine into a harvester. He studied the machine thoroughly and made improvements. As a result, the rate of the rice plant cutter was raised up to 80%, bringing about high economic efficiency in production.

In March 2002, State President Tran Duc Luong sent a letter to Mr Tam, praising him for his innovation.

A private business in Ho Chi Minh City has co-ordinated with him to manufacture the machine for sale. The product is now being with higher efficiency. Recently, the product has been granted with copyright by the Department of Intellectual Property.