Perhaps you should try some spelling variations:
doanh khoa » toan khoa
nghiep va » nghiep vu
nganh hoa » thanh hoa, khanh hoa, danh hoa
danh nhan » doanh nhan, thanh nhan, benh nhan
sach hoc » cach hoc, sach hoi, mach hoc
cong hoa » dong hoa, dong hoc, hang hoa
nhan dan » phan dau, gian dan, nhan tai
su sach » so sach, vu sach
va cong » tai cong, cua cong
hoc xa » hoc ma
xa hop » xa hoi, va hop, 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 va cong hoa ((doanh khoa) or (nganh hoa)) hoc xa hop danh nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoc tap, nghiep va cong hoa ((doanh khoa) OR (nganh hoa)) hoc xa hop danh nhan dan.
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghiep va cong hoa ((doanh khoa) or (nganh hoa)) hoc xa hop danh nhan dan*.