Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
khoi nganh » hoc nganh, moi nganh
nganh khoa » nganh hoa, nganh khong, doanh khoa
cong khoi » cong khi, cong nhoi, tong khoi
hop doanh » hop danh, hoa doanh, nhap doanh
sach hoc » cach hoc, sach hoi, mach hoc
nhan dan » phan dau, gian dan, nhan tai
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach hoc tap, nghien cua cong khoi nganh khoa ((hoc xa) or (hoc ma)) hop doanh nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien cua cong khoi nganh khoa ((hoc xa) OR (hoc ma)) hop doanh nhan dan.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cua cong khoi nganh khoa ((hoc xa) or (hoc ma)) hop doanh nhan dan*.