Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
dang tay » dang xay, dung tay, dan tay
viec cam » viec lam, viec cua, viec va
tinh de » tinh da, sinh de, tinh he
su sach » so sach
tay hoi » tay ho, tao hoi, tay thai
ky dang » ky nang, ky danh
vu sach » vu bach, vu khach
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc 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 (vu sach)) ky dang tay hoi. nhieu viec cam ((xuc va) OR (luc va)) tinh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky dang tay hoi. nhieu viec cam ((xuc va) OR (luc va)) tinh de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ky dang tay hoi. nhieu viec cam ((xuc va) OR (luc va)) tinh de cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky dang tay hoi. nhieu viec cam ((xuc va) OR (luc va)) tinh de cua tre*.