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
cam luc » cam xuc, cau luc
lang xa » dang xay, lang van
lang ha » long ha
sac ky » cac ky, sai ky
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((lang xa) or (lang ha)) hoi. nhieu viec cam luc va trinh ((di cua) OR (de cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((lang xa) OR (lang ha)) hoi. nhieu viec cam luc va trinh ((di cua) OR (de cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((lang xa) or (lang ha)) hoi. nhieu viec cam luc va trinh ((di cua) OR (de cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((lang xa) or (lang ha)) hoi. nhieu viec cam luc va trinh ((di cua) OR (de cua)) tre*.