- Identify and descriptions of the new for sciences and re-descriptions of the known species for new records of Vietnam nematode fauna belonging to both genera Parkellus and Jensenonchus (Family: Mononchidae).
- Comparison of morpho-biometric characters of Parkellus spp. and Jensenonchus spp. between Vietnamese and Polish populations.

- Three species of the genus Parkellus Jaraijpuri, Tahseen & Choi, 2001 (the family Mononchidae Filipjev, 1954 were recorded: P. menzeli (Loof & Winiszewska, 1993) Ahmad & Jairajpuri, 2010 (from Bat Xat Nature Area); P. hagiangensis Vu et al., 2021 (from Bac Me Nature Area) and P. tuyenquangensis Vu et al., 2021 (from Cham Chu and Na Hang Nature Areas). P. hagiangensis and P. tuyenquangensis are described as new species for science while P. menzeli is a newly recorded species for the nematode fauna in Vietnam. The molecular structures of 18S and 28S of those species are firstly analysed and presented at Zoobank. The key to species of the genus Parkellus is updated.
- For the genus Jensenonchus Jairajpuri & Khan, 1982 (the family Iotonchidae Jairajpuri, 1969): the species J. sphagni (Brzeski, 1960) Loof & Winiszewska, 1993 was found 4 populations from studied sites: (1) Bidoup-Nui Ba National Park; (2) Hoang Lien National Park; (3) Bat Xat Nature Area and (4) Phia Oac National Park. These 4 populations from Vietnam and the population from Ukraine have some different characteristics such as: body length, buccal cavity size, the shape and cuticularize of par refringens vaginae (in female reproductive systems), the tail shape and terminal,… However, the molecular structures of 18 S and 28S were different with only few nucleotides and they seem to be intraspecific populations of the species J. sphagni.
-  Publications: 01 manuscription belongs to SCI journal list and 01 manuscription belongs to VAST2 journal list.
-  A nematode collection includings 50 permanent slides of Parkellus and Jensenonchus species which were qualified for taxonomy research.
-  Training: supported to 01 Msc student has graduated in the academic year 2019-2020.

- Two species were described as a new species for science.
- Two genera Parkellus and Jensenonchus including four species are firstly presented for nematode fauna in Vietnam.

- Publications: 01 manuscription belongs SCI journal list and 01 manuscription belongs VAST2 journal list.
Vu, T.T.T. & Winiszewska, G. 2020. New record of the genus Parkellus Jairajpuri, Tahseen & Choi (Mononchida: Mononchidae) with redescription of Parkellus menzeli male in Vietnam. Academia Journal of Biology, 42(2): 29-33
Vu, T.T.T., Rybarczyk-Mydlowska, K., Susulovsky, A., Kubicz, M., Le, T.M.L. & Winiszewska, G. 2021. Descriptions of the new and known species of Parkellus Jairajpuri, Tahseen & Choi, 2001 (Nematoda: Mononchidae) and their phylogenetic position among Mononchida. Journal of Nematololy 53 (e76): 1-21
- Products (description...): A nematode collection includings 50 permanent slides of      Parkellus and Jensenonchus species which were qualified for taxonomy research.
- Other products: Training: supported to 01 Msc student has graduated in academic year 2019-2020.

The results of the study will be useful for National Parks and Nature Areas where they can update the information of the nematode fauna. 

The predatory nematode order Mononchida has only been studied in recent years in Vietnam. The research results demonstrated that the potential to discover new species for science and new records for nematode fauna in Vietnam is very large and should be appropriately invested for further studies in other different geographical regions.