Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cau tuc » cau truc, cau tu, cau luc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa
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: thu sach y nang ma hoi. ((hieu ve) or (lieu va)) cau tuc va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoi. ((hieu ve) OR (lieu va)) cau tuc va danh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoi. ((hieu ve) or (lieu va)) cau tuc va danh vi cua tre*.