Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
hanh vai » hanh vi, hanh tai, hanh van
nang xa » nang x, lang xa, nang ma
hanh va » hang va, hanh vi
va dan » ca dan, va dao, va dau
dan ky » van 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: va dan ky nang xa hoi. hieu viec cac ((loc va) or (duc va)) ((hanh vai) OR (hanh va)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: va dan ky nang xa hoi. hieu viec cac ((loc va) OR (duc va)) ((hanh vai) OR (hanh va)) cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "va dan ky nang xa hoi. hieu viec cac ((loc va) or (duc va)) ((hanh vai) OR (hanh va)) cua tu*".