Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hanh doanh » hang doanh, chinh doanh, doanh doanh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cao » toan cao, thai cao, than cap
toan » tran

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tinh - ((hanh doanh) or (toan doanh)) cua thong cong tac than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - ((hanh doanh) OR (toan doanh)) cua thong cong tac than cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - ((hanh doanh) or (toan doanh)) cua thong cong tac than cao*.