Perhaps you should try some spelling variations:
nhieu viec » nhien viet
hieu viec » hieu ve, sieu viet, hieu hien
danh vai » danh sai, danh va, doanh van
van danh » van doanh, van anh, van hanh
te sach » toc sach
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cac so » cac co, cac bo, cac ho
so van » su van, vo van

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((nang xa) or (nang ma)) hoi. ((hieu viec) OR (nhieu viec)) cac so van danh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (nang ma)) hoi. ((hieu viec) OR (nhieu viec)) cac so van danh vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (nang ma)) hoi. ((hieu viec) OR (nhieu viec)) cac so van danh vai cuu tre*".