Perhaps you should try some spelling variations:
dau tren » dau tien, dat tren, dau tieng
tu sach » thu sach, su sach, te sach
xang xa » lang xa, mang xa, ang xa
hieu va » hieu qua
hanh bi » hanh vi, thanh bai, khanh bui
y xang » ty xang
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: tu sach y xang xa hoi. ((hieu va) OR (lieu va)) cau ((xuc va) OR (tuc va)) hanh bi dau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y xang xa hoi. ((hieu va) OR (lieu va)) cau ((xuc va) or (tuc va)) hanh bi dau tren~".
• Adding a wildcard symbol may retrieve word variants: tu sach y xang xa hoi. ((hieu va) OR (lieu va)) cau ((xuc va) or (tuc va)) hanh bi dau tren*.