Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hanh vai » hanh vi, hanh va, hanh tai
hieu van » hieu va, thien van, lieu va
sach thu » sach thue, sach thieu, sach tham
xang xa » lang xa, mang xa, ang xa
sach ty » sach y, sach tu, xach tay
nam tuc » nam thuc, nam truc, nam tu
xa hanh » xa thanh, xa khanh, va hanh
cua tre » cua te, cuu tre, cua triet

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 ty) OR (sach thu)) xang xa hoi. hieu van nam tuc xa hanh vai ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) xang xa hoi. hieu van nam tuc xa hanh vai ((cua tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach thu)) xang xa hoi. hieu van nam tuc xa hanh vai ((cua tre) or (cau treo))*".