1. Strengthen training capacity in primary health care. 2001-2004
  2. Strengthen training capacity in social and behavioural science. 2001-2003
  3. Developing Maternal Child Health Care for the new curriculum of Master of Public Health (MPH) training in Hanoi School of Public Health. 1998-2000.
  4. Strengthening primary health care management capacity for district health workers in peripherial level in Vietnam. 1998-2000.
  5. Private Health Sector. 1998
  6. Rational Drug use in Vietnam. 1998
  7. Situation analysis in Reproductive health sector in Vietnam. 1999-2000
  8. Training Need Assessment of Health Economic for Health planners and managers. 1999
  9. Sexual Maturation and Menstruation Practice: the Vietnam case study. 2000
  10. Knowledge – Attitude – Practice (KAP) assessment about low-birth weight infant. Đề tài nghiên cứu khoa học cấp cơ sở. ĐHYTCC 2001-2002
  11. Evaluation of Communication Campaign on Oral Contraceptive IDEAL. 2001-2002
  12. Application of DALYs in measure and assess burden of some diseases in Chililab, Hai Duong, Viet Nam. 2003-2007
  13. Community-based intervention to improve early detection of ectopic pregnancy in Chi Linh, Hai Duong. 2005-2007
  14. Strengthening public health training capacities at the Hanoi School of Public Health 2006-2012. 2006-2012
  15. Research project HEPVIC - Maternal Health policy in India, China and Vietnam. 2006-2008
  16. Research Project HESVIC - Stewardship and governance in maternal health care in Vietnam, India and China. 2009-2012
  17. Health Education Reform in 5 Asian countries: Vietnam, Thailand, India, China and Bangladesh. 2012-2014
  18. Review of Reproductive Health Researches in Vietnam 2006 – 2010. 2011-2012
  19. Implementing knowledge into practice for improved neonatal survival; a community-based trial in Quang Ninh province, Vietnam (NeoKIP). 2008-2011.
  20. Partnering with Schools of Public Health to enhance Public Health capacity for HIV prevention and care activities in Vietnam. 2005-2011.
  21. Review of Reproductive Health Researches for Ethnic Minorities in Vietnam 2000 – 2007. 2008
  22. Review of Reproductive Health Researches in Vietnam 2000 – 2005. 2006
  23. From Scandal to Beliefs: Understanding Sexual Beliefs and Attitudes of Vietnam Yahoo Bloggers. 2008-2009
  24. Sex ratio at birth: Son or daughter. What is the ideal family in the Chi Linh district in Viet Nam. 2011-2012
  25. Political Economy of Universal Health Insurance Processes in Vietnam. 2012-2013
  26. Need assessment and design a cost-effectiveness intervention strategy on safe motherhood for UNFPA- supported provinces for the period 2012-2016. 2012-2013
  27. Gender equity in reproductive health and its related factors in 8 provinces in the North Centre Coast region in Vietnam. 2013-2014
  28. Reproductive health of migrant workers in industrial sectors Vietnam. 2013-2015
  29. Improving neonatal health in remote rural areas in China and Vietnam. 2014-2015
  30. Improving acceptability of ethnic minority midwives (EMMs) by local community and health system in mountainous provinces in Vietnam. 2014-2015
  31. The relationship between Violence against women andHIV/AIDS. 2011
  32. Review in Skilled birth attendance in Vietnam. 2009
  33. Adolescent health: A baseline of the longitudical study in Chi Linh, Hai Duong. 2008
  34. Situation of domestic violence against women in An Hai, Hai Phong. 2006
  35. Assessment of public health functions in Vietnam. 2006
  36. Interaction between health professional and clients in family planing clinnic. 2005
  37. Myths and misconceptions about infertility in Vietnam. 2005
  38. Traditional postpartum practices among Vietnamese mothers: A study in An Thi district, Hung Yen province. 2004
  39. Women trafficking and Violent against women in Thailand. 2003
  40. Male' involvement in family planning in rural area of Vietnam. 2000-2002
  41. Situation of placenta previa among mothers who delivered in Institute of Maternal and Newborn protection during 1999 - 2000. 2000