Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh khoa » nganh hoa, doanh khoa, anh khoa
sach hoi » sach doi, sach moi, cach thoi
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
nhan van » nhan dan, nhan va, phan van
te sach » toc sach
hoi tap » hoi dap, hoc tap, hoi tai
hoc xa » hoc ma
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: te sach hoi tap, nghien cac cong hoc ((nganh khoa) or (nganh khong)) hoc xa hoi ca nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoi tap, nghien cac cong hoc ((nganh khoa) OR (nganh khong)) hoc xa hoi ca nhan van.
• Adding a wildcard symbol may retrieve word variants: te sach hoi tap, nghien cac cong hoc ((nganh khoa) or (nganh khong)) hoc xa hoi ca nhan van*.