Perhaps you should try some spelling variations:
chuc nganh » chuc nang, hoc nganh, cac nganh
khong hoc » khung hoc, thong hoc, khong thuoc
sach hoi » sach doi, sach moi, cach thoi
cuu cong » cua cong, thu cong, cac cong
luc ngan » luc nganh, luc nhan, luat ngan
nhan tao » nhan tai, nhan dan
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai
ma hoi » mai hoi, xa hoi, ma hoa
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: tu sach hoi tap, nghien cuu cong ((luc ngan) or (chuc nganh)) khong hoc ma hoi ca nhan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi tap, nghien cuu cong ((luc ngan) OR (chuc nganh)) khong hoc ma hoi ca nhan tao.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cuu cong ((luc ngan) or (chuc nganh)) khong hoc ma hoi ca nhan tao*.