Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
dang xay » dang van, van xay
cham duc » pham duc, cham soc, pham duy
so sach » so sanh, bo sach, hoc sach
vai cua » dai cua, hai cua, lai cua
va cham » va chat, va tham
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
co sach » bo sach, cuon sach, hoc sach

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

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