Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
trung tuan » trung thanh, tran tuan, truong thanh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
cong ban » cong bang, cong san, cong tan
ban hang » ngan hang
hang lap » sang lap, hang la, hang tap

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 sang - thanh ((trung tuan) or (trung tam)) dung cong ban hang lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh ((trung tuan) OR (trung tam)) dung cong ban hang lap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh ((trung tuan) or (trung tam)) dung cong ban hang lap*.