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