Perhaps you should try some spelling variations:
sieu viet » su viet, dien viet, bien viet
hieu viec » nhieu viec, hieu ve, hieu hien
va trinh » van trinh, va tinh, lap trinh
luat cua » luat sua, xuat cua, lua cua
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet

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 ty nang xa hoi. ((hieu viec) OR (sieu viet)) cam duc va trinh luat cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. ((hieu viec) or (sieu viet)) cam duc va trinh luat cua tre*.