Perhaps you should try some spelling variations:
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
dam tu » nam tu, cam tu, tam tu
di cuu » di cau, di cua, dinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang xa hoi. ((hieu va) or (hieu qua)) dam tu ((va hanh) or (va danh)) di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. ((hieu va) OR (hieu qua)) dam tu ((va hanh) OR (va danh)) di cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. ((hieu va) or (hieu qua)) dam tu ((va hanh) or (va danh)) di cuu tre*.