Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh ve » hanh vi, hanh va
luc van » luoc van, luu van, duc van
cam luc » cam xuc, cau luc
hieu va » lieu va, hieu qua
vu nang » vuc nang, va nang, v nang
vu dang » su dang, vu quang, cua dang
su tien » su kien, su hien, tu tieng
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho
kem » kiem

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: thu sach ((vu nang) OR (vu dang)) x hoi. hieu va cam luc van ((hanh ve) OR (hanh kem)) su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((vu nang) OR (vu dang)) x hoi. hieu va cam luc van ((hanh ve) or (hanh kem)) su tien~".
• Adding a wildcard symbol may retrieve word variants: thu sach ((vu nang) OR (vu dang)) x hoi. hieu va cam luc van ((hanh ve) or (hanh kem)) su tien*.