Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nghien cac » nghiep cach, nghien cuu, nghiep cay
thuat sach » thuat lanh, thuat san
hoc nganh » hoc nhanh
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
sach hoi » sach doi, sach moi, cach thoi
thuoc xa » thuoc ma, thuoc va, thuoc la
hoi tap » hoi dap, hoc tap, hoi tai
duoc ma » duoc lam
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach hoi tap, nghien cac cong hoc nganh khong ((thuoc xa) or (duoc ma)) hoi va nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach hoi tap, nghien cac cong hoc nganh khong ((thuoc xa) OR (duoc ma)) hoi va nhan va.
• Adding a wildcard symbol may retrieve word variants: thuat sach hoi tap, nghien cac cong hoc nganh khong ((thuoc xa) or (duoc ma)) hoi va nhan va*.