Perhaps you should try some spelling variations:
duong cuong » duong vuong, duong truong, duong phuong
thieu xanh » chieu xanh, hieu manh, thien anh
chieu tinh » trieu tinh, lieu tinh, chau tinh
duong cong » dung cong, luong cong, duong trong
thanh tra » thanh toan, thanh hoa
tra tuan » tran tuan, tra quan, tri tuan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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) or (chieu tinh)) - thanh tra tuan ((duong cuong) OR (duong cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (chieu tinh)) - thanh tra tuan ((duong cuong) OR (duong cong)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu xanh) or (chieu tinh)) - thanh tra tuan ((duong cuong) OR (duong cong)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: toc ((thieu xanh) or (chieu tinh)) - thanh tra tuan ((duong cuong) OR (duong cong)) dan than cau*.