Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hong cuong » hung cuong, thong chuong, phong chong
hong vuong » hoang vuong, hung vuong, duong vuong
bai toan » bai tap
toan ban » van ban

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 tinh)) - thanh trung tam ((hong cuong) OR (hong vuong)) bai toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - thanh trung tam ((hong cuong) OR (hong vuong)) bai toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu tinh)) - thanh trung tam ((hong cuong) OR (hong vuong)) bai toan ban*".