Perhaps you should try some spelling variations:
nganh nong » nganh cong
nghien cac » nghiep cach, nghien cuu, nghiep cay
thuat san » thuat toan, thuat song, thuat lanh
hoc nganh » hoc nhanh
nhan dan » gian dan, nhan tai
nong hoc » dong hoc, nang hoc, nong thon
cong hoc » dong hoc, cong hoa, cong coc
cac cong » cua cong
phan dau » phan tu, hang dau
san hoc » van hoc, dan hoc, san ho
hoa cau » hoa cac, hoa dau, hoa mau
hoc xa » hoc ma
xa hoa » xa khoa, 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: thuat san hoc tap, nghien cac cong hoc nganh nong hoc xa hoa cau ((nhan dan) OR (phan dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san hoc tap, nghien cac cong hoc nganh nong hoc xa hoa cau ((nhan dan) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: thuat san hoc tap, nghien cac cong hoc nganh nong hoc xa hoa cau ((nhan dan) OR (phan dau))*.