Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nuoc sach » nguoi sach, hoc sach, cuoc cach
khong hoc » khung hoc, thong hoc, khong thuoc
sach hoi » sach doi, sach moi, cach thoi
toan hoc » toan khoa, van hoc, hoa hoc
nhan dan » phan dau, gian dan, nhan tai
hoi tap » hoi dap, hoc tap, hoi tai
mon hoc » dong hoc
va nhan » van nhan, ca nhan, va phan
hoc xa » hoc ma

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

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