Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec cam » viec lam, viec cua, viec va
va trinh » van trinh, va tinh, qua trinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
di cua » doi cua, de cua, do 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 lang xa hoi. nhieu viec cam xuc ((va trinh) OR (lap trinh)) ((di cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. nhieu viec cam xuc ((va trinh) OR (lap trinh)) ((di cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky lang xa hoi. nhieu viec cam xuc ((va trinh) OR (lap trinh)) ((di cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. nhieu viec cam xuc ((va trinh) OR (lap trinh)) ((di cua) or (dai cua)) tre*.