Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
dung cong » dung trong
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 thieu tinh - canh doanh cua ((nhung cong) OR (dung cong)) ((dan toan) or (anh tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - canh doanh cua ((nhung cong) OR (dung cong)) ((dan toan) OR (anh tuan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - canh doanh cua ((nhung cong) OR (dung cong)) ((dan toan) or (anh tuan)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh doanh cua ((nhung cong) OR (dung cong)) ((dan toan) or (anh tuan)) tap*.