Perhaps you should try some spelling variations:
nganh nong » nganh cong
thuc cach » thuoc sach, truoc cach, thuc hanh
tuong hoc » truong hoc, tuong ho, duong hoc
danh gian » dan gian, danh gia, danh giao
cach toi » cach thoi, cac toi, cach noi
tong hoc » thong hoc, trong hoc, tong hop
nong hoc » dong hoc, nang hoc, nong thon
gian dan » gian lang
toi tap » toi gap, toan tap, tong tap
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: thuc cach toi tap, nghien cuu ((tong hoc) OR (tuong hoc)) nganh nong hoc ma hop danh gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuc cach toi tap, nghien cuu ((tong hoc) OR (tuong hoc)) nganh nong hoc ma hop danh gian dan".
• Adding a wildcard symbol may retrieve word variants: thuc cach toi tap, nghien cuu ((tong hoc) OR (tuong hoc)) nganh nong hoc ma hop danh gian dan*.