Perhaps you should try some spelling variations:
lang son » bang song, anh son
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » hieu qua
cao xuc » cam xuc, cao duc, cao suc
xuc ban » duc ban, cuc ban, quoc ban
ban anh » ban hanh, ban banh, ban danh
anh dai » vanh dai, anh bai, anh dat
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: te sach ky ((nang song) or (lang son)) hai. ((hieu va) OR (lieu va)) cao xuc ban anh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang song) OR (lang son)) hai. ((hieu va) OR (lieu va)) cao xuc ban anh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang song) or (lang son)) hai. ((hieu va) OR (lieu va)) cao xuc ban anh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang song) or (lang son)) hai. ((hieu va) OR (lieu va)) cao xuc ban anh dai cua tre*.