Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh tung » thanh cong
mai huong » mai phuong, mai hung, tai phuong
thuat cao » thuat co, thuat bao, thuat cam
mai dung » mai hung, manh dung, ap dung
cong dan » cong san, cong tan, huong dan
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sang - thanh tung ((mai dung) OR (mai huong)) cong dan ((than cao) or (thuat cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - thanh tung ((mai dung) OR (mai huong)) cong dan ((than cao) OR (thuat cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu sang - thanh tung ((mai dung) OR (mai huong)) cong dan ((than cao) or (thuat cao))".
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - thanh tung ((mai dung) OR (mai huong)) cong dan ((than cao) or (thuat cao))*.