Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
chuc nganh » chuc nang, hoc nganh, cac nganh
cong chuc » cong thuc, cong cu, cong cua
thu sach » tu sach, thuat sach, thuoc sach
thuoc ma » hoc ma, duoc ma
nhan dan » phan dau, gian dan, nhan tai
so sach » so sanh, bo sach, co sach
hoi tap » hoi dap, hoc tap, hoi tai
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: ((thu sach) or (so sach)) hoi tap, nghien thu cong chuc nganh khong thuoc ma hoi va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (so sach)) hoi tap, nghien thu cong chuc nganh khong thuoc ma hoi va nhan dan.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (so sach)) hoi tap, nghien thu cong chuc nganh khong thuoc ma hoi va nhan dan*.