Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van, van xay
dau tren » dau tien, dat tren, dau tieng
mang xa » lang xa, mang may, mang cua
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
va cau » van cau, va cac, va dau
anh vi » hanh vi, anh va, anh ve
vi dau » vi dai, va dau, bi dau

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