Perhaps you should try some spelling variations:
sinh dan » sinh danh, sinh san, binh dan
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
ca phoi » cap phoi, cay phoi, gap phoi
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
va sinh » va kinh, va tinh, vi sinh
dan cua » ban cua, dai cua, day cua
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao

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 ky) or (sach ty)) dan ca phoi. hieu va cao duc va sinh dan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) dan ca phoi. hieu va cao duc va sinh dan cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach ty)) dan ca phoi. hieu va cao duc va sinh dan cua tre*.