Perhaps you should try some spelling variations:
nganh nong » nganh cong
cach thoi » cac thoi, cach thuc, cach noi
hoc nganh » hoc nhanh
thoi tap » toi tap, hoc tap, thoi dai
cuu hoan » luu hoang, cuu van, cuu khoa
hoan hoc » hoa hoc, toan hoc, hoang hoa
nong hoc » dong hoc, nang hoc, nong thon
mai khoi » mai khoa, tai khoa, cac khoi
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
tu cach » tu cac
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach thoi tap, nghien cuu hoan hoc nganh nong hoc ((ma hoi) or (mai khoi)) van nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi tap, nghien cuu hoan hoc nganh nong hoc ((ma hoi) OR (mai khoi)) van nhan van.
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien cuu hoan hoc nganh nong hoc ((ma hoi) or (mai khoi)) van nhan van*.