- Contributing to the understanding of biodiversity and the organization of coral reef communities in offshore waters;
- Deep-sea benthic macro-invertebrates were studied for heavy metal concentration and antioxidant chemicals.
- Investigate the effects of ocean acidification on the community on Vietnam's southern continental shelf.

The survey collected more than 1,000 specimens and environmental parameters, the result confirmed that the coral reef communities are most diversity in Vietnam's southern seas, including 526 species of reef organisms and 177 taxa of benthic organisms in deep water; assessed the current status of coral reefs, particularly the bottom topography of the South Vietnam sea and offshore reefs; 50 species of juvenile corals and butterflyfish (Chaetodontidae) are considered as being capable of generating additional reef species populations; Sea anemonefish (Amphiprion perideraion) and table coral (Acropora millepora) have different genetic linkages among population in the Southwest Sea; The degree of heavy metal content accumulation varies between species as well as in regional distribution, in terms of food safety, the concentration of accumulated metals is lower than the Vietnamese standards' permitted limits; Antioxidant activity from mollusks indicated that they are a potential source of marine materials for the exploitation of bioactive chemicals in Vietnam; There was a relationship between acidification factors and the communities of coral reef fish.
Vietnam's infrastructure potential and scope of marine research are currently quite limited, leading in scientific data that are of limited value for international publication. Meanwhile, Vietnam's seas are thought to contain high biodiversity with numerous important marine ecosystems. The research surveys in our waters not only contribute to the solving of scientific problems, but also affirm Vietnam's sovereignty over the sea, islands, and continental shelf. According to the international integration process,  Vietnam should strategic implementation for international experts to participate in scientific research in the East Sea. The results of this expedition confirmed that the collaboration with Russian Federation scientists not only assisted us in resolving problems in terms of equipment and practical experience in deep-sea surveying but also enhanced our capacity to train marine science and technology human resources in Vietnam.

The survey's findings on biodiversity and community structure in reefs and deep seas contribute to the East Sea's biodiversity values being confirmed. The specimens collected for studying biochemistry, genetics and ocean acidification are new research directions for identifying biologically active substances, characterized genetics population-level effects of ocean acidification on the community under change of environmental quality, and has many prospects for practical application to create life-sustaining products from marine biological resources. Furthermore, the new findings in this study are the first data on the state of coral reef biodiversity in offshore waters (Catwick and Bishop); and the collection of marine specimens for the Museum of Oceanography.

- Three scientific papers:
+ Nguyen V.L. and Mai X.D. (2020). Reef fish fauna in the coastal waters of Vietnam. Marine Biodiversity. 50: 100. 10.1007/s12526-020-01131-2 (ISCE).
+ Vo Tran Tuan Linh, Phan Kim Hoang, Le Hung Phu, Nguyen Hong Thu, Phan Minh Thu and Vo Si Tuan, 2021. Coral calcification in the southern part of Viet nam, studied with a new method. Phuket mar. biol. Cent. Res. Bull.78: 29–38 (Scopus).
+ Mai Xuân Đạt, 2019. Coral reef fishes in the banks and rocky islands in the offshore waters of Binh Thuan province, Vietnam Journal of Marine Science and Technology; Vol. 19 (4A): 259–271 (ISSN).
- The collection of marine specimens for the Museum of Oceanography