Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
dang xay » dang van, van xay
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
va chat » van chat, va phat, cao chat
vai cua » dai cua, hai cua, lai cua
va cham » va tham
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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 ((dang xay) or (nang x)) hoi. hieu ((va cham) OR (va chat)) xuc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((dang xay) OR (nang x)) hoi. hieu ((va cham) OR (va chat)) xuc va thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((dang xay) or (nang x)) hoi. hieu ((va cham) OR (va chat)) xuc va thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((dang xay) or (nang x)) hoi. hieu ((va cham) OR (va chat)) xuc va thanh vai cua tre*.