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
ca thuong » cao thuong, cua thuong, va thuong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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 trung ((ca thuong) or (cua cong)) ((cong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh trung ((ca thuong) OR (cua cong)) ((cong dan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh trung ((ca thuong) or (cua cong)) ((cong dan) or (cong san)) toan cao*.