Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
su sach » vu sach
so sach » so sanh, bo sach, co sach
xay hoi » xa hoi, tay hoi, cay phoi
viec va » vien va, viec cua, viec lam
cua tre » cua te, cuu tre, cua triet
ky van » ly van, ty van, ky va
va xuc » va xac, va xu

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) or (so sach)) ky van xay hoi. nhieu viec va xuc ((va tinh) or (may tinh)) hoc cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky van xay hoi. nhieu viec va xuc ((va tinh) OR (may tinh)) hoc cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky van xay hoi. nhieu viec va xuc ((va tinh) or (may tinh)) hoc cua tre*.