Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
ban thanh » ban hanh, ban hang
thao hoc » thai hoc, than hoc, thao khoa
so sach » so sanh, bo sach, co sach
soc ban » hoc ban, coc ban, so ban
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ty » sach y, sach tu, sach thu
tay hoi » tay ho, tao hoi, tay thai
ty sang » ty xang, ty hang, duy sang
cua te » cua tu

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 sang ((thao hoc) or (tay hoi)). hieu ve cham soc ban thanh lap ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty sang ((thao hoc) OR (tay hoi)). hieu ve cham soc ban thanh lap ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: so sach ty sang ((thao hoc) or (tay hoi)). hieu ve cham soc ban thanh lap ((cuu tre) or (cua te))*.