Perhaps you should try some spelling variations:
truong phuong » truong chung, truong trung, dung phuong
chieu xanh » chieu sach, chieu sang, chieu tinh
trung quan » truong quan, trung tuan, truong quang
trong quan » thong quan, tong quan, thong quang
phuong dan » phuong danh, phuong doan, huong dan
hien xanh » hien hanh, hien nhanh, hien khanh
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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: hoc ((hien xanh) OR (chieu xanh)) - manh ((trung quan) OR (trong quan)) truong phuong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (chieu xanh)) - manh ((trung quan) OR (trong quan)) truong phuong dan toan cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu xanh)) - manh ((trung quan) OR (trong quan)) truong phuong dan toan cao*.