Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, gian cac
vien da » vien dai, hien dai
danh co » danh cho, doanh co, anh co
va danh » va dinh, va dan, va hanh
nang xa » nang x, lang xa, nang ma
co cua » con cua, ca cua, cong cua
luc va » duc va, tuc va, loc va
san ky » sang ky, van ky, ban ky
dan ky » van ky
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) OR (vien da)) luc va danh 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) OR (vien da)) luc va danh co cua 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) OR (vien da)) luc va danh co cua su".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) or (dan ky)) nang xa hoi. hieu ((vien cac) OR (vien da)) luc va danh co cua su*.