Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
va tinh » may tinh
va dinh » van dinh, va kinh, vu dinh
sach ty » sach y, sach tu, sach thu
cac dac » cac dan, cac dai, cac bac
hieu ve » hieu va
xang xa » lang xa, mang xa, ang xa
vi cua » vai cua, di cua
cua su » qua su

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: te sach ty xang xa hoi. ((hieu ve) OR (hieu van)) cac dac ((va dinh) OR (va tinh)) vi cua su~.
• Adding a wildcard symbol may retrieve word variants: te sach ty xang xa hoi. ((hieu ve) or (hieu van)) cac dac ((va dinh) or (va tinh)) vi cua su*.