Perhaps you should try some spelling variations:
truoc cach » cuoc cach, truoc cang
nganh nong » nganh cong
thuc cach » thuoc sach, thuc hanh, tuc cac
hoc nganh » hoc nhanh
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
nong hoc » dong hoc, nang hoc, nong thon
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa hoa

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) or (truoc cach)) hoc tap, nghien cuu tong hoc nganh nong hoc xa hoc dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuc cach) OR (truoc cach)) hoc tap, nghien cuu tong hoc nganh nong hoc xa hoc dan phan dau.
• Adding a wildcard symbol may retrieve word variants: ((thuc cach) or (truoc cach)) hoc tap, nghien cuu tong hoc nganh nong hoc xa hoc dan phan dau*.