Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
cong ngang » cong nhan, cong quang, cong lang
hoc thieu » toc thieu, hoc hien
thanh tri » thanh tra, thanh tai, chinh tri
quan hung » quang hung, quan nhung, luan hung
cong vang » cong lang, cong quang, cong dong
tri quan » trinh quan, hai quan, mai quan
cong san » cong tac
toan cao » toan ban, toan 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 tri quan hung ((((cong vang) or (cong san))) or (cong ngang)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh tri quan hung ((((cong vang) OR (cong san))) OR (cong ngang)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh tri quan hung ((((cong vang) or (cong san))) or (cong ngang)) toan cao*.