Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hanh doanh » hang doanh, chinh doanh, doanh doanh
hoc thien » hoc hien, hoc thieu, hoc thiet
doanh kha » doanh khoa, doanh ha, doanh nhan
nang cong » nang song, dang cong, bang cong
kha nang » phap nang, ky nang, ki nang
tan van » tran van, tang van, luan van
lan van » luan van, lang van, san van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien thanh - hanh doanh kha nang cong ((tan van) OR (lan van)) ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thien thanh - hanh doanh kha nang cong ((tan van) or (lan van)) ban*.