Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec cam » viec lam, viec cua, viec va
tinh hoc » sinh hoc, tin hoc, hinh hoc
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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