Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nam thuc » nam thuoc, nam thu, nam tu
cua tre » cua te, cua triet, dua tren
danh tu » anh tu, doanh thu
xa danh » va danh, dia danh, nam danh
sach ky » sac ky, sach y, sach ty
cuu tre » cau tren, cau treo
hiem he » hiem xe, hieu he, thien he
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky tang ma hoi. hiem he ((nam thuc) or (am thuc)) xa danh tu ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky tang ma hoi. hiem he ((nam thuc) OR (am thuc)) xa danh tu ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky tang ma hoi. hiem he ((nam thuc) or (am thuc)) xa danh tu ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky tang ma hoi. hiem he ((nam thuc) or (am thuc)) xa danh tu ((cua tre) OR (cuu tre))*.