Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
nang mai » nang ma, nang tai, lang mai
su triet » su tien, ve triet
ban hanh » ban hang
sach vu » sach va, sach tu, sach uu
su sach » so sach, vu sach
cac xuc » cam xuc, cac nuoc, chat xuc
qua cac » cua cac
mai hoi » mai khoi, dai hoi, lai hoi
vu nang » vuc nang, va nang, vu dang
su viet » so viet

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: su sach vu nang mai hoi. hieu qua cac xuc ((van hanh) OR (ban hanh)) ki ((su triet) OR (su viet))~.
• Adding a wildcard symbol may retrieve word variants: su sach vu nang mai hoi. hieu qua cac xuc ((van hanh) or (ban hanh)) ki ((su triet) or (su viet))*.