Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
sieu viet » su viet, dien viet, bien viet
cac truc » cau truc, cac tru, cac trung
hang di » hang doi, hang vi, hang dien
va hang » van hang, va nang, va lang
truc va » thuc va, thuc vat, trung va
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
cua tuc » cua duc, cua thuoc, luat tuc
y nang » ky nang, ly nang, v nang
cua tu » cua su, cua cu, cua te

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang xa hoi. ((nhieu viec) or (sieu viet)) cac truc va hang di ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. ((nhieu viec) OR (sieu viet)) cac truc va hang di ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. ((nhieu viec) or (sieu viet)) cac truc va hang di ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. ((nhieu viec) or (sieu viet)) cac truc va hang di ((cua tu) OR (cua tuc))*.