Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
dang thuoc » dung thuoc
hoc thieu » toc thieu, hoc hien
nang cham » trang cham, nang cao, nang phat
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao 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 - anh ((nang cham) or (dang thuoc)) dung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - anh ((nang cham) OR (dang thuoc)) dung cong dan van ban*.