Perhaps you should try some spelling variations:
hanh sinh » hanh tinh, hanh dinh, hinh sinh
sinh cua » manh cua, dinh cuu, sinh va
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
va hanh » van hanh, va thanh, ban hanh
cua tre » cua te, cuu tre, cua triet
cac tu » cac thu, cach tu, cac du

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty lang xa hoi. hieu qua cac tu va hanh sinh cua tre~.
• Adding a wildcard symbol may retrieve word variants: so sach ty lang xa hoi. hieu qua cac tu va hanh sinh cua tre*.