Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
van anh » van thanh, tuan anh, van minh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky tang ma hoi. ((hieu ve) or (hieu va)) cac xuc ((ngan hang) or (van anh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky tang ma hoi. ((hieu ve) OR (hieu va)) cac xuc ((ngan hang) OR (van anh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach ky tang ma hoi. ((hieu ve) or (hieu va)) cac xuc ((ngan hang) or (van anh)) vi cua tre*.