Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
su sach » so sach
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
va cham » va chat, va tham
ty hang » ly hang, ty xang, thi hang
vu sach » vu bach, vu khach
cua tre » cua te, cuu tre, cua triet
va hoi » xa hoi, va hoc, va hoa
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa

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)) ty hang va hoi. hieu va cham ((luc va) OR (tuc va)) thanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ty hang va hoi. hieu va cham ((luc va) OR (tuc va)) thanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ty hang va hoi. hieu va cham ((luc va) OR (tuc va)) thanh vai cua tre*.