Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
sach thue » sach thieu, sach tham, cach thuc
van thanh » ban thanh, van tuan
thien van » thi van
sach thu » sach thieu, sach tham, cach thuc
vai cua » dai cua, hai cua, lai cua
cua van » cua ban, cua vat, cua dan
cua tre » cua te, cuu tre, cua triet
mang xa » lang xa, mang may, dang xay
ang xa » lang xa, dang xay, hoang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach thu) OR (sach thue)) ((mang xa) or (ang xa)) hoi. thien van nam cua van thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach thue)) ((mang xa) OR (ang xa)) hoi. thien van nam cua van thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach thue)) ((mang xa) or (ang xa)) hoi. thien van nam cua van thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) OR (sach thue)) ((mang xa) or (ang xa)) hoi. thien van nam cua van thanh vai cua tre*.