Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
dai thuc » dan thuc, dai thu, dai thua
dang vat » dang van, dong vat, dang nhat
viec dai » vien dai, viec tai, viec dat
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cua triet, dua tren
va dang » van dang, va nang, va lang
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
cuu tre » cau tren, cau treo

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 ty) or (sach y)) nang xa hoi. nhieu viec dai thuc va dang vat ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach y)) nang xa hoi. nhieu viec dai thuc va dang vat ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach y)) nang xa hoi. nhieu viec dai thuc va dang vat ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach y)) nang xa hoi. nhieu viec dai thuc va dang vat ((cua tre) OR (cuu tre))*.