Perhaps you should try some spelling variations:
hoc thanh » hoc nhanh, hoan thanh, hoc phan
thanh hoa » thanh pho
hoi doanh » hoa doanh, voi doanh, doi doanh
dich hoc » sinh hoc, hinh hoc, kinh hoc
tinh hoc » sinh hoc, tin hoc, hinh hoc
nhan dan » phan dau, gian dan, nhan tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc lai » hoc dai, hoc bai, hoc lam
lai hoi » dai hoi, lai hoa, lai roi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((dich hoc) or (tinh hoc)) tap, nghien cuu mon hoc thanh hoa hoc lai hoi doanh nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((dich hoc) OR (tinh hoc)) tap, nghien cuu mon hoc thanh hoa hoc lai hoi doanh nhan dan.
• Adding a wildcard symbol may retrieve word variants: te ((dich hoc) or (tinh hoc)) tap, nghien cuu mon hoc thanh hoa hoc lai hoi doanh nhan dan*.