Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
truong cao » truong dai
hien xanh » hien hanh, hien nhanh, hien khanh
dung cong » dung trong
cao dung » cao dang, cao dong, cao ung
tap toan » tap doan, tap quan, bai toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) OR (chieu xanh)) - thanh truong cao dung cong ((tap toan) or (anh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - thanh truong cao dung cong ((tap toan) OR (anh tuan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - thanh truong cao dung cong ((tap toan) or (anh tuan)) cau*".