Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cua triet, dua tren
danh co » danh cho, doanh co, anh co
va danh » va dinh, va dan, va hanh
cuu tre » cau tren, cau treo
hieu va » hieu qua
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. ((hieu va) OR (lieu va)) cam xuc va danh co ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky dang xa hoi. ((hieu va) or (lieu va)) cam xuc va danh co ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xa hoi. ((hieu va) or (lieu va)) cam xuc va danh co ((cua tre) OR (cuu tre))*.