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
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
nhan tao » nhan tai, nhan dan
tu sach » thu sach, su sach, te sach
hoi tap » hoc tap, hoi tai, hai tap
va nhan » van nhan, ca nhan, va phan
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((hoi tap) OR (hoi dap)), nghien cuu dong hoc nganh khong hoc ma hoi va nhan tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((hoi tap) OR (hoi dap)), nghien cuu dong hoc nganh khong hoc ma hoi va nhan tao".
• Adding a wildcard symbol may retrieve word variants: tu sach ((hoi tap) OR (hoi dap)), nghien cuu dong hoc nganh khong hoc ma hoi va nhan tao*.