- Assessment the long-term change in environmental quality and cyanobacterial toxins in Tri An Reservoir.
- Assessment the effects of artificial dams on water quality and cyanobacterial toxins in Tri An Reservoir.

Theoretical results:
- Results showed that water quality of the Tri An Reservoir tended to decline and seriously eutrophicated during the past 20 years, creating favorable conditions for the development of cyanobacteria and causing blooms in  the Tri An reservoir. The concentration of nutrients, especially nitrogene and phosphorus, tended to increase in the water.
- Cyanobacteria dominated in the Tri An Reservoir, in which the group of Microcystis spp. is dominant and causing blooms. Microcystis spp. was the main toxins producing group. In the recent years, cyanobacteria blooms associated with microcystins  have been annually occurred in the Tri An reservoir.
The project has built a database of cyanobacteria with the information of the 16s rRNA sequences. All sequences have been assigned with codes number on the geneebank.
- Results also indicated that local people living near the reservoir who use the water may suffer adverse health effects from high proliferation of cyanobacerial bloom and release of MC. The results showed that the rate of toxic exposure likely to cause cancer Direct oral exposure of cyanobacteria with no carcinogeneicity was relatively and the most affected group was adults.
- This study highlights that artificial dams may cause alteration the water current, enhance accumulation of pollutants and increase water residence time, which have significantly contributed to the water eutrophication and cyanobacterial blooms in the Tri An Reservoir.
Applied results: Results of this study have been published on various high impact international journals and national journals that could be used for other purposes. 

This research evaluated the eutrophication levels and water quality trends in the Tri An Reservoir. It also provided new information on cyanobacterial toxins, geneetic diversity and earthy taste and odour compounds from cyanobacteria. The health risk assessment related to cyanotoxins exposure of local people living near Tri An Reservoir, Vietnam was investigated. This project has successfully applied remote sensing and machine learning methods to analyze and predict water quality and cyanobacterial blooms in Tri An reservoir.

- Scientific papers in referred journals (list):
+ Nam-Thang Ha , Hao Quang Nguyen, Nguyen Cung Que Truong, Thi Luom Le, Van Nam Thai, Thanh Luu Pham, 2020. Estimation of nitrogene and phosphorus concentrations from water quality surrogates using machine learning in the Tri An Reservoir, Viet nam. Environmental Monitoring and Assessment, 192:789.
+ Tan-Duc Nguyen, Xuan-Quang Ngo, Thanh-Luu Pham, Thanh-Son Dao, 2020. Ecotoxicological investigation of cyanobacterial crude extracts to Daphnia  magna under subchronic test conditions. Turkish Journal of Zoology, 44:498–507.
+ Thien An Dao Nguyen, Linh Thi Nguyen, Alexis Enright, Luu Thanh Pham, Hoang Yen Thi Tran, Thai Thanh Tran, Van Ha Thi Nguyen, Dang Ngoc Tran, 2021. Health risk assessment related to cyanotoxins exposure of a community living near Tri An Reservoir, Vietnam. Environmental Science and Pollution Research 28:56079–56091.
+ Nguyen HQ, Ha NT, Nguyen NL, Pham TL, 2021. Comparing the performance of machine learning algorithms for remote and in situ estimations of chlorophyll-a content: A case study in the Tri An Reservoir, Vietnam. Water Environment Research 93(12):2941–2957.
+ Trần Thị Hoàng Yến, Lê Thị Lượm, Phạm Thanh Lưu, 2019. Assessing eutrophic status and environmental factor  regulating green algae community in Tri An Reservoir. Vietnam Journal Agriculture Science, 17(8): 645–664.
+ Pham Thanh Luu, Ngo Duc Duy, Le Thanh Long, 2019. Toxicity of the cyanobacteria Ocillatoria limosa isolated from Tri An Reservoir. Tap chi sinh hoc 2019, 41(2se1&2se2): 467–474
+ Phạm Thanh Lưu, Nguyễn Thị Mỹ Lệ, Trịnh Hồng Phương, Trần Thị Hoàng Yến, Trần Thành Thái, Ngô Xuân Quảng, 2020. Aplication of Landsat 8 Oli for the total suspended solid (TSS) mapping in the Tri An reservoir, Dong Nai province. Science & Technology Development Journal – Natural Sciences, 4(SI):SI87–SI95
+ Tran Thanh Thai, Pham Thanh Luu, Tran Thi Hoang Yen,  Nguyen Thi My Yen, Ngo Xuan Quang, 2020. Assessing changes in ecological quality status of sediment in Tri An Reservoir (Southeast Vietnam) by using indicator of nematode communities. VNU Journal of Science: Natural Sciences and Technology, 36(1):45–56
+ Phạm Thanh Lưu, Trần Thị Hoàng Yến, Trần Thành Thái, Ngô Xuân Quảng, 2021. Using quantitative real-time polymerase chain reaction (qRT-PCR) for detection microcystin producing cyanobacteria. Science & Technology Development Journal, 24(2):1954–1961
+ Phạm Thanh Lưu, Đoàn Ngọc Tài, Trần Thị Hoàng Yến, Trần Thành Thái, Lê Thị Lượm, Trần Ngọc Đăng, Ngô Xuân Quảng, 2021. Long-term variations of the water quality and cyanobacterial communityin TriAn Reservoir, Dong Nai province. Science & Technology Development Journal–Natural Sciences, 6(1):1–9
+ Tran Thi Hoang Yen, Pham Thanh Luu, 2019. Environmental factors influencing chlorophyll-a concentration in Tri An Reservoir, Vietnam. Conference on advanced researches in the earth and environmental sciences, new research results, 497–500. ISBN: 978-604-913-958-1.
+ Phạm Thanh Lưu, Trần Thị Hoàng Yến, Trần Thành Thái, Ngô Xuân Quảng, Nguyễn Thị Mỹ Yến, Nguyễn Xuân Đồng, Thái Thị Minh Trang, 2021. Eutrophication, microcystins and geosmin from cyanobacterial blooms in Tri An Reservoir. Proceedings of the 3-national scientific conference of Vietnam natural museum system, 684–692. ISBN: 978-604-9988-03-5.
+ Phạm Thanh Lưu, 2020. Toxins and secondary metabolites from cyanobacteria. Publishing House of Natural Sciences and Technology. 207 p.