Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
luan nhung » luan chung, luan hung, luan phuong
quan nhung » qua nhung, luan chung, quang hung
hoc thieu » toc thieu, hoc hien
hanh dung » thanh dung, anh dung, hanh dong
cua nhung » va nhung
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 ((luan nhung) or (((quan nhung) OR (cua nhung)))) cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh dung ((luan nhung) OR (((quan nhung) OR (cua nhung)))) cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - hanh dung ((luan nhung) or (((quan nhung) OR (cua nhung)))) cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh dung ((luan nhung) or (((quan nhung) OR (cua nhung)))) cong dan toan cao*.