Perhaps you should try some spelling variations:
thanh trung » thanh tung
thong trung » thong trong, chong trung, truong trung
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
cua thong » cua thuong, cua khong, cua tong
trung dai » truong dai, truong dao, trung tam
dai toan » bai toan, dan toan, dai tan
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu tinh)) - ((canh tranh) OR (thanh trung)) cua thong trung dai toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu tinh)) - ((canh tranh) or (thanh trung)) cua thong trung dai toan ban~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu tinh)) - ((canh tranh) or (thanh trung)) cua thong trung dai toan ban*.