Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh lap » thanh san, phan lap, thanh hai
tang van » dang van, hoang van, trong van
tu sach » thu sach, su sach, te sach
cau xuc » cam xuc, cau luc, cau truc
cuu tre » cau tren, cau treo
xuc gia » duc gia, luc gia, tuc gia
hieu va » lieu va, hieu qua
van hoc » van hoa
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cua triet, dua tren
va cau » van cau, va cac, va dau

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) or (thuoc sach)) ky tang van hoc. hieu va cau xuc gia thanh lap ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) ky tang van hoc. hieu va cau xuc gia thanh lap ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuoc sach)) ky tang van hoc. hieu va cau xuc gia thanh lap ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) ky tang van hoc. hieu va cau xuc gia thanh lap ((cuu tre) OR (cua tre))*.