Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
va trinh » van trinh, va tinh, lap trinh
viec cam » viec lam, viec cua, viec va
nang ma » tang ma, sang ma, nang cao
cam luc » cam xuc, cau luc
nang xa » nang x, lang xa, mang xa
vat cua » mat cua, dat cua, hat cua
bat cua » ban cua, mat cua, bai cua
sac ky » cac ky, sai ky
luc va » duc va, tuc va, loc va
tu sac » tu sach, tu cac, tu san

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang xa) OR (nang ma)) hoi. nhieu viec cam luc va trinh ((vat cua) OR (bat cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang xa) or (nang ma)) hoi. nhieu viec cam luc va trinh ((vat cua) OR (bat cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) or (nang ma)) hoi. nhieu viec cam luc va trinh ((vat cua) OR (bat cua)) triet*.