Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
hieu cao » chieu cao, hieu cac, hieu ca
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
va thay » va tham, la thay, va hay
thay ho » tay ho, thay co, thay doi
tuc gia » tac gia, duc gia, luc gia
toc gia » toc giay, tac gia, quoc gia
cua tre » cua te, cuu tre, cua triet

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 ty) OR (sach tu)) va thay ho. hieu cao chat ((tuc gia) or (toc gia)) thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach tu)) va thay ho. hieu cao chat ((tuc gia) OR (toc gia)) thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) OR (sach tu)) va thay ho. hieu cao chat ((tuc gia) or (toc gia)) thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) OR (sach tu)) va thay ho. hieu cao chat ((tuc gia) or (toc gia)) thanh dai cua tre*.