Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
su sach » so sach, vu sach
duc van » duc va, duc tan, duc manh
xuc van » luc van, vuc van, xuc ban
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
o lai » o lao
o hai » co hai, so hai, _ hai

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 ky nang ((o hai) or (o lai)). hieu ve cham ((xuc van) or (duc van)) hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((o hai) OR (o lai)). hieu ve cham ((xuc van) OR (duc van)) hanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((o hai) or (o lai)). hieu ve cham ((xuc van) or (duc van)) hanh thai cua tre*.