Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh nong » nganh cong
nong thuoc » dong thuoc, long thuoc, khong thuoc
goc nganh » hoc nganh, hoc nhanh, cac nganh
cach hoc » cach thuc, cach thoi, dich hoc
sach doi » sach hoi, sach moi, sach dao
thuoc xa » thuoc ma, thuoc va, thuoc la
nhan dan » phan dau, gian dan, nhan tai
va nhan » van nhan, ca nhan, va phan

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 hoc) or (sach doi)) tap, nghien cua mot goc nganh nong thuoc xa hoi va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((cach hoc) OR (sach doi)) tap, nghien cua mot goc nganh nong thuoc xa hoi va nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu ((cach hoc) or (sach doi)) tap, nghien cua mot goc nganh nong thuoc xa hoi va nhan dan*.