Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec cam » viec lam, viec cua, viec va
su sach » vu sach
tinh de » tinh da, sinh de, tinh he
va tinh » may tinh
xay hoi » xa hoi, tay hoi, cay phoi
ky danh » ky anh
ky dang » ky nang
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
de cua » le cua, te cua, dieu cua

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 dang) or (ky danh)) xay hoi. nhieu viec cam xuc va tinh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ((ky dang) OR (ky danh)) xay hoi. nhieu viec cam xuc va tinh de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ((ky dang) or (ky danh)) xay hoi. nhieu viec cam xuc va tinh de cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ((ky dang) or (ky danh)) xay hoi. nhieu viec cam xuc va tinh de cua tre*.