Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
cac luc » cau luc, coc luc, cac nuoc
danh co » danh cho, doanh co, anh co
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
luc va » duc va, tuc va, loc va
san ky » sang ky, van ky, ban ky
dan ky » van ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((san ky) or (dan ky)) nang xa hoi. hieu vien cac luc va danh co ((cua su) OR (qua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (dan ky)) nang xa hoi. hieu vien cac luc va danh co ((cua su) OR (qua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) or (dan ky)) nang xa hoi. hieu vien cac luc va danh co ((cua su) OR (qua su))".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) or (dan ky)) nang xa hoi. hieu vien cac luc va danh co ((cua su) OR (qua su))*.