International Conference on Singularities and Algebraic Geometry, Phu Yen, March 18-22, 2024, Link .
Vietnam Mathematical Congress, 10th, Da Nang, 8/2023.
Conference on Algebra – Geometry – Topology 2021, Thai Nguyen – Hanoi, Vietnam, October 21-23, 2021.
Singularity Theory and its Applications, Da Lat, Vietnam November 16-18, 2020.
Workshop on Optimization and Scientific Computing, BaVi, Hanoi, Vietnam, 4/2019.
Vietnam National Congress of Mathematician, Nha Trang, 2018.
Quantum Information Theory and Related Topics 2017, Duy Tan University, Da Nang, Vietnam, 8/2017.
Conference on Algebra – Geometry – Topology 2016, Buon Ma Thuot city, Vietnam, 10/2016.
Quantum Information Theory and Related Topics 2016, Ritsumeikan University, Kusatsu, Japan, 9/2016.
Quantum Information Theory and Related Topics 2015, Vietnam Institute for Advanced Study in Mathematics, Hanoi, Vietnam, 9/2015.
Workshop on Optimization and Scientific Computing, BaVi, Hanoi, Vietnam, 4/2014.
Christoffel function and Moment matrix, 03/2023. Link
A note on real algebraic sets, Hanoi Institute of Mathematics, 12/2022. Link
Łojasiewicz inequalities: The existence and computation of the exponents , Seminar of Derpartment of Geometry and Topology, Hanoi Institute of Mathematics, 3/2021.
On the stability of Global Holderian error bounds of polynomial functions, Seminar of Derpartment of Analysis, Hanoi University of Sciences - Vietnam National University, 10/2018.
Error bounds, Seminar of Laboratory of Applied Mathematics and Computing at PTIT, 10/2017.
Morse theory, Seminar of Derpartment of Geometry and Topology, Hanoi Institute of Mathematics, 3/2015.
Positivstellensatz of Putinar, Vietnam Institute for Advanced Study in Mathematics, 2012.
(2016) Department of Mathematics, Ritsumeikan University, Kusatsu, Shiga, Japan.
(2012) Abdus Salam School of Mathematical Sciences, Lahore, Punjab, Pakistan.