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