Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
thu sach » tu sach, thuat sach, thuoc sach
dang cay » dang xay, dang ca, dang cac
viec cam » viec lam, viec cua, viec va
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
cay cho » cap cho, cao cho, cay co
tinh te » kinh te, tinh tu, tinh he
cua tre » cua te, cuu tre, cua triet
xuc va » tuc va, luc va, xac va
te cua » tue cua, le cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky dang cay cho. nhieu viec cam ((xuc va) or (duc va)) tinh te cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky dang cay cho. nhieu viec cam ((xuc va) OR (duc va)) tinh te cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ky dang cay cho. nhieu viec cam ((xuc va) or (duc va)) tinh te cua tre*.