Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec cam » viec lam, viec cua, viec va
tinh hoi » trinh hoi, tinh hoc, tinh hai
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
hoi cua » hoi chuc
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
xuc va » duc va, luc va, xac va
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: so sach y nang xa hoi. nhieu viec cam ((xuc va) or (tuc va)) tinh hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. nhieu viec cam ((xuc va) OR (tuc va)) tinh hoi cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. nhieu viec cam ((xuc va) or (tuc va)) tinh hoi cua tre*.