Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
manh trung » manh tung, thanh trung, manh hung
cong quang » luong quang, thong quang, duong quang
trung dai » truong dai, truong dao, trung tam
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
dai dung » dai duong, dan dung, mai dung
tuan cau » toan cau, quan cau, tuan cu
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: ho chieu xanh - manh trung dai dung cong quang ((tuan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - manh trung dai dung cong quang ((tuan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - manh trung dai dung cong quang ((tuan cau) or (toan ban))*.