Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
dai khoang » da khoang, dai khong, tao khoang
hoc thieu » toc thieu, hoc hien
dai nhung » ai nhung, dai khung, dap nhung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 - thanh cong ((dai nhung) or (dai khoang)) cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh cong ((dai nhung) OR (dai khoang)) cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh cong ((dai nhung) or (dai khoang)) cong dan toan cao*.