Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
van thanh » ban thanh, van tuan
nam duoc » nam thuoc, da duoc, dat duoc
tu sach » thu sach, su sach, te sach
lap cuu » cap cuu, lap cua
nam duc » pham duc, nam thuc, nam buoc
tu lanh » tu hanh, tu lenh, tu manh
tu lang » cu lang, xu lang, tu quang
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 lang) OR (tu lanh)) 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 lang) OR (tu lanh)) 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 lang) OR (tu lanh)) 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 lang) OR (tu lanh)) xa hoi. lieu va ((nam duc) or (nam duoc)) van thanh lap cuu tre*.