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
so sach » so sanh, bo sach, co sach
lang xa » lang ha, dang xay, lang van
cam tuc » cam xuc, cam tu, nam thuc
cuu tre » cua tre, cau tren, cau treo
y lang » o lang, _ lang, tay lang
di cuu » di cau, di cua, dinh cuu

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