Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
cua dang » cua ban
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
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: hoc thieu xanh - ((canh tranh) or (thanh tung)) ((cua dang) OR (cua cong)) cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((canh tranh) OR (thanh tung)) ((cua dang) OR (cua cong)) cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((canh tranh) or (thanh tung)) ((cua dang) OR (cua cong)) cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((canh tranh) or (thanh tung)) ((cua dang) OR (cua cong)) cong dan than cao*.