Perhaps you should try some spelling variations:
sanh dai » sinh dai, sanh dan, vanh dai
sach ty » sach y, sach tu, sach thu
dang ca » dang cac, dan ca, hang ca
ca phoi » cap phoi, cay phoi, gap phoi
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
xuc va » tuc va, luc va, xac 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 ((sac ky) or (sach ty)) dang ca phoi. hieu va cac ((xuc va) or (duc va)) sanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sach ty)) dang ca phoi. hieu va cac ((xuc va) OR (duc va)) sanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sach ty)) dang ca phoi. hieu va cac ((xuc va) or (duc va)) sanh dai cua tre*.