Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
nam tuc » nam thuc, nam truc, nam tu
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua

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: te sach y nang ma hoa. ((hieu van) OR (lieu va)) nam tuc ((va hanh) OR (va danh)) vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoa. ((hieu van) or (lieu va)) nam tuc ((va hanh) OR (va danh)) vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoa. ((hieu van) or (lieu va)) nam tuc ((va hanh) OR (va danh)) vi cua tre*.