Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
nhan dan » phan dau, gian dan, nhan tai
te sach » toc sach
sach do » sach dao, sach doi, sach de
cu nhan » ca nhan
do dap » doi dap, do dai, do dac
ma hoi » mai hoi, xa hoi, ma hoa
hoi cu » hoi chu, hoi cua, hoi cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach do dap, nghien cuu cong hoc nganh ((khoa hoc) OR (hoa hoc)) ma hoi cu nhan dan~.
• Adding a wildcard symbol may retrieve word variants: te sach do dap, nghien cuu cong hoc nganh ((khoa hoc) or (hoa hoc)) ma hoi cu nhan dan*.