Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh lap » thanh san, phan lap, thanh hai
nam duoc » nam thuoc, da duoc, dat duoc
sach thu » sach thue, sach thieu, sach tham
lap cuu » cap cuu, lap cua
nam duc » pham duc, nam thuc, nam buoc
sach tu » cach tu, sach ty, sach uu
lang xa » lang ha, dang xay, lang van
cuu tre » cua tre, cau tren, cau treo

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 tu) OR (sach thu)) lang xa hoi. lieu va ((nam duc) or (nam duoc)) van thanh lap cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach thu)) lang xa hoi. lieu va ((nam duc) OR (nam duoc)) van thanh lap cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tu) OR (sach thu)) lang xa hoi. lieu va ((nam duc) or (nam duoc)) van thanh lap cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) OR (sach thu)) lang xa hoi. lieu va ((nam duc) or (nam duoc)) van thanh lap cuu tre*.