Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
nhung cong » dung cong, thong cong, hang cong
hoc khien » hoc hien, hoc nghien, hoc thieu
tong cong » trong cong, cong cong, dung cong
tran cao » toan cao, tran chau, trang cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc khien tinh - hanh doanh luan ((nhung cong) or (tong cong)) tan tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien tinh - hanh doanh luan ((nhung cong) OR (tong cong)) tan tran cao.
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - hanh doanh luan ((nhung cong) or (tong cong)) tan tran cao*.