Perhaps you should try some spelling variations:
nganh khung » nganh khong, nhanh hung
goc nganh » hoc nganh, hoc nhanh, cac nganh
khung hoc » chung hoc, nhung hoc, thuong hoc
sach hoi » sach doi, sach moi, cach thoi
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai
cuu mot » cua mot, cuu mo, huu mot
va nhan » van nhan, va phan, va nha
hoc xa » hoc ma

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoi tap, nghien cuu mot goc nganh khung hoc xa hoi ((va nhan) OR (ca nhan)) van~".
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cuu mot goc nganh khung hoc xa hoi ((va nhan) OR (ca nhan)) van*.