Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
dang tay » dang xay, dan tay, bang tay
viec cam » viec lam, viec cua, viec va
dung tay » dung tai, dung may, vung tay
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
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: su sach ky ((dang tay) OR (dung tay)) hoi. nhieu viec cam xuc ((va tinh) or (may tinh)) te cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((dang tay) OR (dung tay)) hoi. nhieu viec cam xuc ((va tinh) OR (may tinh)) te cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((dang tay) OR (dung tay)) hoi. nhieu viec cam xuc ((va tinh) or (may tinh)) te cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((dang tay) OR (dung tay)) hoi. nhieu viec cam xuc ((va tinh) or (may tinh)) te cua tre*.