Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, trung tam, tran tuan
tuan thong » toan thong, tran thong, tuan phong
tap toan » tap doan, bai toan
tap quan » tac quan, hai quan

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 xanh)) - thanh trung tuan thong thong ((tap toan) OR (tap quan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (chieu xanh)) - thanh trung tuan thong thong ((tap toan) OR (tap quan)) tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu xanh) or (chieu xanh)) - thanh trung tuan thong thong ((tap toan) OR (tap quan)) tap*".