Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
chua tre » chua tri, cua tre, chua trieu
hieu thi » sieu thi, hieu chi, hiep thi
thanh va » thanh van, hanh va, thanh ha
cham luc » cham soc, nhan luc, cham cuu
thi cham » thi hai, toc cham, thi ha
khoc hoi » khoa hoi, khoan hoi, khoa hoc
sach ty » sach y, sach tu, sach thu
hoc hoi » hoc khoi, hoc hoa, hoc noi
luc van » luoc van, luu van, duc van
ty dong » tay dong, tu dong, ly dong
va chua » vua chua, ca chua, va chu
so sach » so sanh, bo sach, co sach

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 ty dong ((hoc hoi) or (khoc hoi)). hieu thi cham luc van thanh va chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty dong ((hoc hoi) OR (khoc hoi)). hieu thi cham luc van thanh va chua tre.
• Adding a wildcard symbol may retrieve word variants: so sach ty dong ((hoc hoi) or (khoc hoi)). hieu thi cham luc van thanh va chua tre*.