Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec lam » viec va
tinh hoc » sinh hoc, hinh hoc, trinh hoa
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
lam tuc » lam thuoc, lam truoc, luat tuc
tin hoc » sinh hoc
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa

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 ky tang xa hoi. nhieu viec lam tuc va ((tinh hoc) OR (tin hoc)) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky tang xa hoi. nhieu viec lam tuc va ((tinh hoc) OR (tin hoc)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang xa hoi. nhieu viec lam tuc va ((tinh hoc) OR (tin hoc)) cuu tre*.