Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
hoang van » hang va
cong van » cong vang, cong san, song van
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sang - thanh trung cua nhung ((cong van) or (hoang van)) tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - thanh trung cua nhung ((cong van) OR (hoang van)) tuan ban.
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - thanh trung cua nhung ((cong van) or (hoang van)) tuan ban*.