Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec lam » viec va
dan hang » ban hang, van hang, dat hang
thuc dan » thuc hanh, hoc dan, thuc vat
lam thuc » lam thuoc, am thuc, nam thuc
cua tre » cua te, cua triet, dua tren
hang di » hang doi, hang vi, hang dien
cuu tre » cau tren, cau treo
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
tu san » thu san, tu ban, tu can
tu sac » tu sach, tu cac, tu bac

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) OR (tu san)) ky lang xa hoi. hieu viec lam thuc dan hang di ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky lang xa hoi. hieu viec lam thuc dan hang di ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu san)) ky lang xa hoi. hieu viec lam thuc dan hang di ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu san)) ky lang xa hoi. hieu viec lam thuc dan hang di ((cua tre) or (cuu tre))*.