Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
thuoc lai » thuoc tai, thuoc sai, thuoc luan
sach hoi » sach doi, sach moi, cach thoi
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
thuoc la » thuoc ma, thuoc va, thuoc tai
nhan dan » phan dau, gian dan, nhan tai
bo sach » co sach, hoc sach
hoi tap » hoi dap, hoc tap, hoi tai
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach hoi tap, nghien cuu dong hoc nganh khong ((thuoc lai) OR (thuoc la)) hoi ca nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach hoi tap, nghien cuu dong hoc nganh khong ((thuoc lai) OR (thuoc la)) hoi ca nhan dan*".