- Kong Vannak, Dec 2016. “Effect of Oxygen Cold Plasma on Physicochemical properties of rice qualities and its application”. Thesis for Philosophy of Doctor in Food Science and Technology Specialized in Rice starch and starch-based products, Kasetsart University, Thailand.
- Kong Vannak, 2005. “Effect of selected binders on storage stability of ground fish quality”, Thesis for Master of Science in Food Science and Technology Specialized in Agri-Food Industries organized by the National Food Science Engineering Institute, France.
- Kong Vannak, 2001. “Effect of land leveling on rice yield”, Thesis for bachelor degree of engineering in field of Agricultural Engineering, Royal University of Agriculture, Phnom Penh, Cambodia.