Perhaps you should try some spelling variations:
sach tham » sach nha
van doan » van doanh, van toan, van hoan
lang van » dang van, tang van, hoang van
cham duc » pham duc, cham soc, pham duy
sach thu » sach thue, sach thieu, cach thuc
duc van » duc va, duc tan, duc manh
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
van hoi » van hoa, van hoc, van hoe
va cuu » va cau, va chu, va huu

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 tham)) lang van hoi. ((hieu ve) or (lieu va)) cham duc van doan va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach tham)) lang van hoi. ((hieu ve) OR (lieu va)) cham duc van doan va cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach tham)) lang van hoi. ((hieu ve) or (lieu va)) cham duc van doan va cuu tre*".