Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh dai » hanh tai, hanh dao, vanh dai
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
vu nang » vuc nang, va nang, v nang
vu dang » su dang, vu quang, cua dang
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va

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: tu sach ((y nang) OR (((vu nang) OR (vu dang)))) xa hoi. hieu van cam xuc va hanh dai cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (((vu nang) OR (vu dang)))) xa hoi. hieu van cam xuc va hanh dai cua viet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (((vu nang) OR (vu dang)))) xa hoi. hieu van cam xuc va hanh dai cua viet*.