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
tong cuong » tang cuong, tong cong, hong cuong
trung cua » truong cua, trung tuan, trung cap
cuong tap » luong tap, cong tac, luong tai
cua tong » cua cong, cua dong, cua nong
tap toan » tap doan, tap quan, bai toan
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 cua tong cuong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - thanh trung cua tong cuong tap toan ban*.