Perhaps you should try some spelling variations:
quan thanh » ban thanh, van thanh
thanh vai » thanh hai, thanh van, thanh tai
su sach » so sach
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, vu khach
ma hoi » mai hoi, xa hoi, ma hoa
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang ma hoi. lieu ((va cam) OR (va cao)) qua quan thanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ky nang ma hoi. lieu ((va cam) OR (va cao)) qua quan thanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky nang ma hoi. lieu ((va cam) OR (va cao)) qua quan thanh vai cua tre*.