Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
va nang » van nang, da nang, cam nang
va dao » ca dao
v nang » vu nang, van nang, voi nang
va cao » va cac, va co, va bao
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 ((v nang) OR (va nang)) x hoi. lieu ((va cao) or (va dao)) thuc va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (va nang)) x hoi. lieu ((va cao) OR (va dao)) thuc va hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((v nang) OR (va nang)) x hoi. lieu ((va cao) or (va dao)) thuc va hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) OR (va nang)) x hoi. lieu ((va cao) or (va dao)) thuc va hanh vai cuu tre*.