Perhaps you should try some spelling variations:
sach tai » sach bai, sach tham, sach dao
hanh dai » hanh tai, hanh dao, vanh dai
dang xay » dang van, van xay
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
lang xa » lang ha, lang van
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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 tai ((lang xa) or (dang xay)) hoi. hieu ((va bai) or (va cam)) xuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tai ((lang xa) OR (dang xay)) hoi. hieu ((va bai) OR (va cam)) xuc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tai ((lang xa) or (dang xay)) hoi. hieu ((va bai) or (va cam)) xuc va hanh dai cua tre*.