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