Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
tai roi » lai roi, tai hoi, tai loi
va cam » va cham, va cac, va cao
ve cac » va cac, vien cac

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 tai roi. hieu ((va cam) or (ve cac)) luc ((va hanh) or (va thanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang tai roi. hieu ((va cam) OR (ve cac)) luc ((va hanh) OR (va thanh)) vai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang tai roi. hieu ((va cam) or (ve cac)) luc ((va hanh) or (va thanh)) vai cua tre*.