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

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 anh co cua 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 anh co cua su.
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) or (dan ky)) nang xa hoi. hieu vien cac luc va anh co cua su*.