  In this paper, we propose several novel techniques to extract and mining
opinions of Vietnamese reviews of customers about a number of products traded
on e-commerce in Vietnam. The assessment is based on the emotional level of
customers on a specific product such as mobile and laptop. We exploit the
features of the products because they are much interested by customers and have
many products in the Vietnam e-commerce market. Thence, it can be known the
favorites and dislikes of customers about exploited products.
