Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
trinh vai » trinh van, trinh tai, trinh vat
viec cam » viec lam, viec cua, viec va
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua
tang ma » mang may, tang van
tuc va » thuc va, truc va, tuc xa
tu sac » tu sach, tu cac, tu san
luc va » duc va, loc va
sac ky » cac ky, sai ky
cua te » cua tu

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 (tang ma)) hoi. nhieu viec cam ((luc va) OR (tuc va)) trinh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang xa) or (tang ma)) hoi. nhieu viec cam ((luc va) OR (tuc va)) trinh vai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) or (tang ma)) hoi. nhieu viec cam ((luc va) OR (tuc va)) trinh vai cua te*.