Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
cuong cong » cong cong, luong cong, duong cong
cong luong » cong thuong, nang luong, cong dong
luong than » luong thanh, luong nhan, luong tham
hoc thieu » toc thieu, hoc hien
trung cap » truong cao
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu quang - thanh ((trung cap) or (trung tam)) cuong cong luong than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - thanh ((trung cap) OR (trung tam)) cuong cong luong than cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - thanh ((trung cap) or (trung tam)) cuong cong luong than cau*.