Perhaps you should try some spelling variations:
sieu viet » su viet, dien viet, bien viet
hieu viec » nhieu viec, hieu ve, hieu hien
hanh vai » hanh vi, hanh va, hanh tai
nang xa » lang xa, nang ma, mang xa
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cac luc » cau luc, coc luc, cac nuoc
vu san » va san, vu ban
luc va » duc va, tuc va, loc va
san ky » sang ky, van ky, dan ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu san ky ((nang xa) or (nang x)) hoi. ((hieu viec) OR (sieu viet)) cac luc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu san ky ((nang xa) OR (nang x)) hoi. ((hieu viec) OR (sieu viet)) cac luc va hanh vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu san ky ((nang xa) or (nang x)) hoi. ((hieu viec) OR (sieu viet)) cac luc va hanh vai cua te*".