Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
dang xay » dang van, van xay
viec cam » viec lam, viec cua, viec va
su sach » vu sach
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
va sinh » va kinh, va tinh, vi sinh
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: ((su sach) or (((so sach) OR (so sanh)))) ky dang xay hoi. nhieu viec cam xuc va sinh hoc cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (((so sach) OR (so sanh)))) ky dang xay hoi. nhieu viec cam xuc va sinh hoc cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (((so sach) OR (so sanh)))) ky dang xay hoi. nhieu viec cam xuc va sinh hoc cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (((so sach) OR (so sanh)))) ky dang xay hoi. nhieu viec cam xuc va sinh hoc cua tre*.