Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
cuu trong » cuu tong, chu trong, luu trong
trong hoc » truong hoc, tuong hoc, thong hoc
hoc nganh » hoc nhanh
sach hoi » sach doi, sach moi, cach thoi
dap nhan » dap nha, dac nhan, dam nhan
nhan dan » phan dau, gian dan, nhan tai
so sach » so sanh, bo sach, co sach
hoi tap » hoc tap, hoi tai, hai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach hoi tap, nghien cuu trong hoc nganh khoa ((hoc xa) or (hoc ma)) hoi dap nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach hoi tap, nghien cuu trong hoc nganh khoa ((hoc xa) OR (hoc ma)) hoi dap nhan dan.
• Adding a wildcard symbol may retrieve word variants: so sach hoi tap, nghien cuu trong hoc nganh khoa ((hoc xa) or (hoc ma)) hoi dap nhan dan*.