Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
anh hoang » thanh hoang, minh hoang, tnhh hoang
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
trinh han » trinh quan
anh bang » anh quang, tinh bang, anh dong
han tap » han tai, toan tap, nhan tai

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 - ((anh bang) or (anh hoang)) quan dung cong trinh han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((anh bang) OR (anh hoang)) quan dung cong trinh han tap*.