Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
sach moi » sach doi, sach hoi, bach mai
dong hoc » dong co, dong luc
khoa hoc » hoa hoc
nhan dan » phan dau, gian dan, nhan tai
te sach » toc sach
moi dap » hoi dap, doi dap, moi dan
mon hoc » toan hoc
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.

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