Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dua tren » dung tren
cham tuc » nham thuc, pham thuc, tham thuc
va hanh » van hanh, va thanh, va danh
sach tu » sach thu, cach tu, sach ty
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
lang xa » lang ha, dang xay, lang van
tu lang » cu lang, tu lanh, xu lang
cuu tre » cua tre, cau tren, cau treo
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: tu sach tu lang xa hoi. ((hieu ve) OR (hieu van)) cham tuc va hanh vi ((dua tren) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu lang xa hoi. ((hieu ve) OR (hieu van)) cham tuc va hanh vi ((dua tren) or (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: tu sach tu lang xa hoi. ((hieu ve) OR (hieu van)) cham tuc va hanh vi ((dua tren) or (cuu tre))*.