Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
lang van » dang van, tang van, hoang van
viec cam » viec lam, viec cua, viec va
tinh doi » trinh doc, trinh do, tinh hoc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc 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 lang van hoi. nhieu viec cam ((xuc va) or (luc va)) tinh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang van hoi. nhieu viec cam ((xuc va) OR (luc va)) tinh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang van hoi. nhieu viec cam ((xuc va) or (luc va)) tinh doi cua tre*.