Perhaps you should try some spelling variations:
sach tay » sach hay, sach nay, sach tai
hanh dai » hanh tai, hanh dao, vanh dai
xach tay » canh tay
hieu cao » chieu cao, hieu cac, hieu ca
cua tre » cua te, cuu tre, cua triet
tay ho » tay co, tay o, tay khao
va tay » va thay, van tay, ha tay
tuc va » thuc va, truc va, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach tay) OR (xach tay)) va tay ho. hieu cao chat ((tuc va) or (tuc xa)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach tay) OR (xach tay)) va tay ho. hieu cao chat ((tuc va) OR (tuc xa)) hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach tay) OR (xach tay)) va tay ho. hieu cao chat ((tuc va) or (tuc xa)) hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach tay) OR (xach tay)) va tay ho. hieu cao chat ((tuc va) or (tuc xa)) hanh dai cua tre*.