Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuc » khong thuoc, khong chuc, phong thuc
hoc nganh » hoc nhanh
mach hoc » dich hoc, anh hoc, bac hoc
cach hoc » cach thuc, cach thoi, dich hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
cua hang » cua dang, cua nhung, cua cong
hang dau » hang va, hang tai
thuc va » thuc vat, thuc dan, thuc day
hoi cua » hoi chuc
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: kon ((mach hoc) or (cach hoc)) tap, nghien cuu dong hoc nganh khong thuc va hoi cua hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: kon ((mach hoc) OR (cach hoc)) tap, nghien cuu dong hoc nganh khong thuc va hoi cua hang dau.
• Adding a wildcard symbol may retrieve word variants: kon ((mach hoc) or (cach hoc)) tap, nghien cuu dong hoc nganh khong thuc va hoi cua hang dau*.