Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » hieu qua
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
nam tu » nam thu, nam thuc
di cuu » di cau, di cua, dinh cuu
x hoi » xa hoi, o hoi, x ho

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 x hoi. ((hieu va) or (lieu va)) nam tu va hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. ((hieu va) OR (lieu va)) nam tu va hanh di cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. ((hieu va) or (lieu va)) nam tu va hanh di cuu tre*.