Perhaps you should try some spelling variations:
nhung hoang » khung hoang, phuong hoang, nhung cong
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
hoang van » hang va
trang va » tran van, hang va
van toan » van tuan, van tan, van thanh
toan ban » van ban

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 ((trang va) or (trung tam)) nhung hoang van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh ((trang va) OR (trung tam)) nhung hoang van toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh ((trang va) or (trung tam)) nhung hoang van toan ban*.