Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh dai » hanh tai, hanh dao, vanh dai
hieu van » thien van, lieu va, hieu ve
sach ky » sac ky, sach y, sach ty
vu sach » vu bach, su sach, vu khach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
ky lang » ky nang, ky dang, ky tang
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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