Perhaps you should try some spelling variations:
nhieu viec » nhien viet
hieu viec » hieu ve, sieu viet, hieu hien
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
hanh vai » hanh vi, hanh va, hanh tai
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua
cac luc » cau luc, coc luc, cac cuoc
va hanh » van hanh, va thanh, va danh
vu san » va san, vu ban
san ky » sang ky, van ky, dan ky
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 nang xa hoi. ((hieu viec) or (nhieu viec)) ((cac luc) OR (cac nuoc)) va hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu san ky nang xa hoi. ((hieu viec) OR (nhieu viec)) ((cac luc) OR (cac nuoc)) va hanh vai cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu san ky nang xa hoi. ((hieu viec) or (nhieu viec)) ((cac luc) OR (cac nuoc)) va hanh vai cua tu*".