Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
ban thanh » ban hanh, ban hang
su sach » so sach, vu sach
hoi tap » hoc tap, hoi tai, hai tap
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc bai » hoc dai, hoc giai
bai hoi » bai choi, bai hoc, dai hoi
hoi ban » hoi dan, hoi bai, doi ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((hoi tap) OR (hoi dap)), nghien cuu mon hoc nganh khong hoc bai hoi ban thanh san~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((hoi tap) OR (hoi dap)), nghien cuu mon hoc nganh khong hoc bai hoi ban thanh san".
• Adding a wildcard symbol may retrieve word variants: su sach ((hoi tap) OR (hoi dap)), nghien cuu mon hoc nganh khong hoc bai hoi ban thanh san*.