Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
cong quang » luong quang, thong quang, duong quang
hien xanh » hien hanh, hien nhanh, hien khanh
cua trung » cua truong, xuan trung, cua nhung
cong vang » cong lang, cong ngang, cong san
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
tai cao » thai cao, tao cao, tai sao

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)) - anh tang cua trung ((cong vang) OR (cong quang)) tai cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (chieu xanh)) - anh tang cua trung ((cong vang) OR (cong quang)) tai cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu xanh)) - anh tang cua trung ((cong vang) OR (cong quang)) tai cao*.