Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
dung cuong » dung cong, dung luong, dang cuong
cuong dan » cuong danh, huong dan, cong dan
tra tuan » tran tuan, tra quan, ta tuan
tri tuan » tri quan, tran tuan, tri tue
dan toan » van toan, dan than, manh toan
toan cau » 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: toc thieu xanh - thanh ((tra tuan) or (tri tuan)) dung cuong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - thanh ((tra tuan) OR (tri tuan)) dung cuong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - thanh ((tra tuan) or (tri tuan)) dung cuong dan toan cau*.