Perhaps you should try some spelling variations:
trung thanh » truong thanh
thieu sang » chieu sang, thieu khang, thieu quang
truong cao » truong dai
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
cong san » cong tac
san quan » van quan, ban quan, dan quan
quan ban » quang ban, qua ban, quan van

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