Perhaps you should try some spelling variations:
dau tieng » dau tien, cau tieng, day tieng
thu sach » tu sach, thuat sach, thuoc sach
dau tren » dau tien, dat tren, dau trong
mang xa » lang xa, mang may, dang xay
hieu va » lieu va, hieu qua
cau xuc » cam xuc, cau luc, cau truc
xuc van » duc van, luc van, vuc van
van anh » van thanh, tuan anh, van minh
y mang » cay mang
va cau » van cau, va cac, va dau
anh vi » hanh vi, anh va, anh ve

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y mang xa hoi. hieu va cau xuc van anh vi ((dau tren) OR (dau tieng))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y mang xa hoi. hieu va cau xuc van anh vi ((dau tren) OR (dau tieng))".
• Adding a wildcard symbol may retrieve word variants: thu sach y mang xa hoi. hieu va cau xuc van anh vi ((dau tren) OR (dau tieng))*.