Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec lam » viec va
hang doi » hang di, hang loi, huong doi
dan hang » ban hang, van hang, dat hang
lam hoc » am hoc, lam hoa, tam hoc
cuu tre » cua tre, cau tren, cau treo
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
cua te » cua tu
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky lang) or (ky tang)) xa hoi. hieu viec lam hoc dan hang doi ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky lang) OR (ky tang)) xa hoi. hieu viec lam hoc dan hang doi ((cua te) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky lang) or (ky tang)) xa hoi. hieu viec lam hoc dan hang doi ((cua te) or (cuu tre))*.