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