Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
tung quang » tuong quang, dung quang, hung quang
quang cong » quang cuong, quang dong, quang hoang
hoc chieu » hoc thieu, ho chieu, hoc hien
manh tung » manh hung, thanh tung
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cau » toan cao, toan ban, toan tai
toan tap » toan 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 - manh tung quang cong ((cong tan) or (cong tac)) ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - manh tung quang cong ((cong tan) OR (cong tac)) ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - manh tung quang cong ((cong tan) or (cong tac)) ((toan cau) or (toan tap))*.