Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nhanh nong » nhanh dong, nhanh song, nhanh cong
nganh nong » nganh cong
mach hoc » cach hoc, dich hoc, anh hoc
van phan » van phong, van thanh, luan phan
tu mach » tu cach, tu manh, tu hach
cua mon » cua mot, cua moi, cua con
mon hoc » toan hoc, dong hoc
hoi van » hoi va, hoi dan, hai van
phan va » phan van, nhan va, han va
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu mach hoc tap, nghien cua mon hoc ((nhanh nong) or (nganh nong)) hoc xa hoi van phan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cua mon hoc ((nhanh nong) OR (nganh nong)) hoc xa hoi van phan va.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cua mon hoc ((nhanh nong) or (nganh nong)) hoc xa hoi van phan va*.