Perhaps you should try some spelling variations:
hanh than » hanh han, hanh nhan, hanh phan
than cua » nhan cua, thai cua, ban cua
su sach » so sach
vu sach » vu bach, vu khach
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
va bac » van bac, va cac, va bai

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ty nang ma hoi. lieu va bac duc va hanh than cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ty nang ma hoi. lieu va bac duc va hanh than cua tre*.