Perhaps you should try some spelling variations:
thanh trung » thanh tung
thong huong » thong thuong, thong duong, thong thong
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
trung cap » truong cao, trung tam
cap thong » cap tong, chap thuong, phap thong
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) OR (chieu sach)) - thanh trung cap thong huong ((dan than) or (dan chan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - thanh trung cap thong huong ((dan than) OR (dan chan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sach)) - thanh trung cap thong huong ((dan than) or (dan chan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sach)) - thanh trung cap thong huong ((dan than) or (dan chan)) ban*.