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
nhan dan » phan dau, gian dan
nhan tai » hang tai, van tai, toan tai
so sach » so sanh, bo sach, co sach
hoi tap » hoi dap, hoc tap, hoi tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach hoi tap, nghien cuu mon hoc nganh khoa hoc xa hoi va ((nhan dan) OR (nhan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach hoi tap, nghien cuu mon hoc nganh khoa hoc xa hoi va ((nhan dan) OR (nhan tai))".
• Adding a wildcard symbol may retrieve word variants: so sach hoi tap, nghien cuu mon hoc nganh khoa hoc xa hoi va ((nhan dan) OR (nhan tai))*.