Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cham tuc » nham thuc, pham thuc, tham thuc
danh di » danh du, xanh di, danh dien
danh vi » hanh vi, dinh vi, danh va
sach ty » sach y, sach tu, sach thu
so sach » so sanh, bo sach, co sach
hieu ve » hieu va
dang xa » dang xay, lang xa, dang ha
ty dang » ty xang, ky dang, ty hang
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: so sach ty dang xa hoi. ((hieu ve) OR (hieu van)) cham tuc va ((danh vi) OR (danh di)) hoa viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty dang xa hoi. ((hieu ve) or (hieu van)) cham tuc va ((danh vi) OR (danh di)) hoa viet~".
• Adding a wildcard symbol may retrieve word variants: so sach ty dang xa hoi. ((hieu ve) or (hieu van)) cham tuc va ((danh vi) OR (danh di)) hoa viet*.