Perhaps you should try some spelling variations:
thanh trung » thanh tung
khong tuong » khong trong, phong tuong, thong thuong
khong xuong » khong dung, hong vuong, thong duong
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu quang » thieu quang, hieu quan, hieu qua
trung cua » truong cua, trung tuan, trung cap
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (hieu quang)) - thanh trung cua ((khong tuong) OR (khong xuong)) dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu quang)) - thanh trung cua ((khong tuong) OR (khong xuong)) dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (hieu quang)) - thanh trung cua ((khong tuong) OR (khong xuong)) dan phan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu quang)) - thanh trung cua ((khong tuong) OR (khong xuong)) dan phan cau*.