Perhaps you should try some spelling variations:
cham sac » cham soc, pham sach, cap sac
van hanh » van thanh, ban hanh, van anh
hanh dai » hanh tai, hanh dao, vanh dai
su sach » so sach, vu 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
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sac van » cac van, san van, sat van
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: su sach ty lang xa hoi. hieu ve cham sac van hanh dai cua tre~.
• Adding a wildcard symbol may retrieve word variants: su sach ty lang xa hoi. hieu ve cham sac van hanh dai cua tre*.