Perhaps you should try some spelling variations:
nhieu viec » nhien viet
hieu viec » hieu ve, sieu viet, hieu hien
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
cam tuc » cam xuc, cam tu, nam thuc
tin hoc » sinh hoc
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
va tin » va tinh, van tin, va tieng

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach _ lang xa hoi. ((nhieu viec) OR (hieu viec)) cam tuc va tin hoc cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ lang xa hoi. ((nhieu viec) OR (hieu viec)) cam tuc va tin hoc cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach _ lang xa hoi. ((nhieu viec) OR (hieu viec)) cam tuc va tin hoc cua tre*.