Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
hieu tinh » chieu tinh, lieu tinh, kieu tinh
doanh cua » doanh luan
cua thong » cua thuong, cua khong, cua tong
duong van » duong va, luong va, trong van
doc hieu » toc thieu, hoc thieu, hoc hien
dang van » hoang van, hang va
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu tinh - hanh doanh cua thong ((duong van) OR (dang van)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu tinh - hanh doanh cua thong ((duong van) OR (dang van)) than cao*".