Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
qua cam » qua cham, qua cac, qua ca
xuc van » duc van, luc van, vuc van
x hoi » xa hoi, o hoi, x ho

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

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