Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
sach hoi » sach doi, sach moi, cach thoi
khoa hoc » hoa hoc
cau nhan » chau nhan, ca nhan, cam nhan
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
cu nhan » ca nhan
hoc xa » hoc ma

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoi tap, nghien cuu mon hoc nganh khoa hoc xa hoi ((cau nhan) OR (cu nhan)) tao~".
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cuu mon hoc nganh khoa hoc xa hoi ((cau nhan) OR (cu nhan)) tao*.