Perhaps you should try some spelling variations:
nganh khung » nganh khong, nhanh hung
khung hoc » chung hoc, nhung hoc, thuong hoc
hoc nganh » hoc nhanh
nhan tai » hang tai, van tai, toan tai
sach hoi » sach doi, sach moi, cach thoi
van nhan » van phan, van thanh, danh nhan
cong hoc » dong hoc, cong hoa, cong coc
nghe thu » nghe thuat
hai van » thai van, ha van, hai tan
hoi tap » hoi dap, hoc tap, hoi tai
tu sach » thu sach, su sach, te sach
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoi tap, ((nghe thu) or (nghien cuu)) cong hoc nganh khung hoc xa hai van nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi tap, ((nghe thu) OR (nghien cuu)) cong hoc nganh khung hoc xa hai van nhan tai.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, ((nghe thu) or (nghien cuu)) cong hoc nganh khung hoc xa hai van nhan tai*.