Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
hop doanh » hop danh, hoa doanh, nhap doanh
sach hoc » sach hoi, mach hoc, sach duoc
cach hoc » cach thuc, cach thoi, dich hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
nhan va » nhan tai, nhan dan, nhan tao
ma hop » mau hop, ma hoa, va hop

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

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