Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
dang cay » dang xay, dang ca, dang cac
viec cam » viec lam, viec cua, viec va
tu sach » thu sach, su sach, te sach
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: tu sach ky dang cay cho. nhieu viec cam ((xuc va) OR (duc va)) tinh te cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu 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: tu sach ky dang cay cho. nhieu viec cam ((xuc va) OR (duc va)) tinh te cua tre*.