Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
hanh lai » hanh lam, hanh tai, thanh lap
sang ky » sang kyo, dang ky, tang ky
nang xa » nang x, lang xa, nang ma
lai cua » dai cua, hai cua, lai chau
san ky » van ky, dan ky, ban ky
loc va » hoc va, luc va
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((san ky) OR (sang ky)) nang xa hoi. hieu viec cac ((loc va) or (duc va)) hanh lai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((san ky) OR (sang ky)) nang xa hoi. hieu viec cac ((loc va) OR (duc va)) hanh lai cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((san ky) OR (sang ky)) nang xa hoi. hieu viec cac ((loc va) or (duc va)) hanh lai cua tu*".