Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh dung » thanh duong, thanh tung, thanh hung
luan nhung » luan hung, quan nhung, luan phuong
luan chung » luan chinh
hoc thieu » toc thieu, hoc hien
hanh dung » anh dung, hanh dong, manh dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 dung) OR (thanh dung)) ((luan nhung) or (luan chung)) cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((hanh dung) OR (thanh dung)) ((luan nhung) OR (luan chung)) cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((hanh dung) OR (thanh dung)) ((luan nhung) or (luan chung)) cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((hanh dung) OR (thanh dung)) ((luan nhung) or (luan chung)) cong dan toan cao*.