Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh via » hanh vi, anh va, hanh ve
hieu va » lieu va, hieu qua
hanh va » hang va, hanh vi
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
xang ma » tang ma, nang ma, sang ma
hieu ve » hieu van
y xang » ty xang
luc va » duc va, tuc va, loc va
ma hoi » mai hoi, xa hoi, ma hoa

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 xang ma hoi. ((hieu ve) or (hieu va)) cam luc va ((hanh via) OR (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y xang ma hoi. ((hieu ve) OR (hieu va)) cam luc va ((hanh via) OR (hanh va)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y xang ma hoi. ((hieu ve) or (hieu va)) cam luc va ((hanh via) OR (hanh va)) cua tre*".