Perhaps you should try some spelling variations:
nghiep cau » nghiep cay, nghiep can, nghiep chan
nganh khoa » nganh khong, doanh khoa, anh khoa
nganh hoa » thanh hoa, khanh hoa, danh hoa
hoc doanh » hoa doanh, hoc danh, hoc dan
sach hoc » cach hoc, sach hoi, mach hoc
cau cong » cac cong, cuu cong, cao cong
cong hoa » dong hoa, dong hoc, hang hoa
su sach » so sach, vu sach
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa hoa

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

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