Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hai dung » hai duong, mai dung, hai dang
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
khan cap » khan ap, than cap, khoan cam
ha dung » kha dung, nha dung, ha dong

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 trung ((ha dung) OR (hai dung)) ((cong ban) or (cong san)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh trung ((ha dung) OR (hai dung)) ((cong ban) OR (cong san)) khan cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh trung ((ha dung) OR (hai dung)) ((cong ban) or (cong san)) khan cap*".