Perhaps you should try some spelling variations:
sach tong » sach rong, sach thuong, sach huong
sach song » sach dung
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
nhan dan » phan dau, gian dan, nhan tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan 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: tu ((sach tong) OR (sach song)) tap, nghien cuu mon hoc nganh hoa hoc xa hoi va nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tong) OR (sach song)) tap, nghien cuu mon hoc nganh hoa hoc xa hoi va nhan dan".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tong) OR (sach song)) tap, nghien cuu mon hoc nganh hoa hoc xa hoi va nhan dan*.