Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
tung dan » dung dan, huong dan, trung dai
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cau » toan cao, toan ban, toan tap
dan ban » van ban, can ban, dan ba

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - thanh tung dan ban ((cong dan) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - thanh tung dan ban ((cong dan) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - thanh tung dan ban ((cong dan) or (cong san)) toan cau*.