Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh khoa » nganh khong, doanh khoa, anh khoa
nganh hoa » thanh hoa, khanh hoa, danh hoa
mach hoc » cach hoc, dich hoc, anh hoc
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
van nhan » van phan, van thanh, danh nhan
bo mach » bo sach, ban mach, bo trach
hai van » thai van, ha van, hai tan
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: bo mach hoc tap, nghien cac cong hoc ((nganh khoa) or (nganh hoa)) hoc xa hai van nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo mach hoc tap, nghien cac cong hoc ((nganh khoa) OR (nganh hoa)) hoc xa hai van nhan va.
• Adding a wildcard symbol may retrieve word variants: bo mach hoc tap, nghien cac cong hoc ((nganh khoa) or (nganh hoa)) hoc xa hai van nhan va*.