Perhaps you should try some spelling variations:
nganh khung » nganh khong, nhanh hung
hoc nganh » hoc nhanh
khung hoc » chung hoc, nhung hoc, thuong hoc
sach hoc » cach hoc, sach hoi, mach hoc
cuu tuan » huu tuan, chu tuan, cuu toan
tuan hoc » toan hoc, luan hoc, than hoc
nhan dan » phan dau, nhan tai
gian dan » gian lang
tu sach » thu sach, su sach, te sach
ma khoi » mai khoi, ra khoi, xa khoi
khoi va » hoi va, khi va, choi va

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: tu sach hoc tap, nghien cuu tuan hoc nganh khung hoc ma khoi va ((nhan dan) OR (gian dan))~.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu tuan hoc nganh khung hoc ma khoi va ((nhan dan) or (gian dan))*.