Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thanh trung » thanh tung
cap thuong » chap thuong, ca thuong, cao thuong
hoc thieu » toc thieu, hoc hien
trung cap » truong cao, trung tam
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
chan cau » phan cau, can cau, chinh cau

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 thuong ((cong dan) or (cong tac)) chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - thanh trung cap thuong ((cong dan) OR (cong tac)) chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - thanh trung cap thuong ((cong dan) or (cong tac)) chan cau*.