Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
nhanh hoa » nhanh hoan, thanh hoa, khanh hoa
sach doi » sach hoi, sach moi, sach dao
nhan dan » phan dau, gian dan, nhan tai
te sach » toc sach
doi tai » hoi tai, dai tai, doi tac
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va phan
ma hoi » mai hoi, ma hoa, me hoi

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

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