Perhaps you should try some spelling variations:
nganh nong » nganh cong
cach thoi » cac thoi, cach thuc, cach noi
hoc nganh » hoc nhanh
thoi tai » thoi dai, hoi tai, phoi tai
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
nong hoc » nang hoc, nong thon, duong hoc
cua nhan » ca nhan, cua ngan, cua nha
nhan tai » hang tai, van tai, toan tai
tu cach » tu cac
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi

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 tai, nghien cuu dong hoc nganh nong hoc ((ma hoi) or (mai hoi)) cua nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi tai, nghien cuu dong hoc nganh nong hoc ((ma hoi) OR (mai hoi)) cua nhan tai.
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tai, nghien cuu dong hoc nganh nong hoc ((ma hoi) or (mai hoi)) cua nhan tai*.