| TT | Thứ tự theo năm | Thời gian | Tổ chức | Người ký |
| 43. | 1. | 29/3/1999 | Konkuk university, Korea | Prof. Nguyen Van Dao President of VNU |
| 44. | 2. | 23/4/1999 | Guizhou University, China | Prof. Nguyen Duc Chinh Vice-President of VNU |
| 45. | 3. | 23/4/1999 | Chungnam National University, Korea | Prof. Nguyen Van Dao President of VNU |
| 46. | 4. | 26/4/99 | Kyung Hee University ( Korea ) | Prof. Nguyen Van Dao President of VNU |
| 47. | 5. | 2/8/1999 | Texas Tech University ( USA ) | Prof. Dao Trong Thi Vice-President of VNU |
| 48. | 6. | 19/8/1999 | Vrije Universiteit Brussel (Belgium) | Prof. Nguyen Van Dao President of VNU |
| 49. | 7. | 15/10/1999 | Tokai Gakuen University | Prof. Nguyen Duc Chinh Vice-President |
| 50. | 8. | 18/10/1999 | Henan University (China) | Prof. Nguyen Van Dao President of VNU |
| 51. | 9. | 20/8/1999 | Osaka University of Foreign Studies (Japan) | Prof. Nguyen Van Dao President of VNU |
| 52. | 10. | 15/12/1999 | National University of Tokyo, Japan | Prof. Nguyen Van Dao President of VNU |
