Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
hieu vien » hieu hien, thieu nien, hieu tieng
van hanh » van thanh, ban hanh, van anh
bach xuc » bach tuoc, bach xuan, bach hue
te sach » toc sach
xuc van » duc van, luc van, vuc van
ky sang » ky dang, ky tang, duy sang
hanh va » hang va, hanh vi
va cua » va chua, via cua, ca cua
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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: te sach ((ky sang) OR (ky nang)) ma hoi. ((hieu vien) OR (hieu viec)) bach xuc van hanh va cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky sang) or (ky nang)) ma hoi. ((hieu vien) OR (hieu viec)) bach xuc van hanh va cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky sang) or (ky nang)) ma hoi. ((hieu vien) OR (hieu viec)) bach xuc van hanh va cua te*.