Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
danh sai » dung sai, danh bat, danh dau
van danh » van doanh, van anh, van hanh
viec cac » vien cac, viec cua, viec lam
tu cach » tu cac
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, mang xa
su sach » so sach, vu sach
cac lo » cac lop, cac co, cac bo
lo van » le van, vo van, so van

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

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