Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
van phong » van dong, hai phong
phong van » phung van, thong van, phong va
sach hoi » sach doi, sach moi, cach thoi
te sach » toc sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoi van » hoi va, hoi dan, hai van
ma hoi » mai hoi, xa hoi, ma hoa

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 hoi dap, nghien cuu mon hoc ((nganh khoa) OR (thanh pho)) hoc ma hoi van phong van~.
• Adding a wildcard symbol may retrieve word variants: te sach hoi dap, nghien cuu mon hoc ((nganh khoa) or (thanh pho)) hoc ma hoi van phong van*.