Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
hanh doanh » hang doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
hoc khien » hoc hien, hoc nghien, hoc thieu
doanh cua » doanh luan
cua nhung » va nhung
dan toan » van toan, dan than, manh toan

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 cua nhung cong ((dan toan) or (anh tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien tinh - hanh doanh cua nhung cong ((dan toan) OR (anh tuan)) tap.
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - hanh doanh cua nhung cong ((dan toan) or (anh tuan)) tap*.