Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
hanh vai » hanh vi, hanh va, hanh tai
viec cam » viec lam, viec cua, viec va
nang ma » sang ma, nang cao, mang may
vai cua » dai cua, hai cua, lai cua
tang ma » mang may, tang van
luc va » tuc va, loc va
vu san » va san, vu ban
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 ma) OR (tang ma)) hoi. nhieu viec cam ((luc va) or (duc va)) hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu san ky ((nang ma) OR (tang ma)) hoi. nhieu viec cam ((luc va) OR (duc va)) hanh vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu san ky ((nang ma) OR (tang ma)) hoi. nhieu viec cam ((luc va) or (duc va)) hanh vai cua te*".