Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
ung huong » dung huong, dung thuong, dung phuong
tung cao » nung cao, truong cao, trung cap
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
cao ung » cao dung, cac ung, cho ung

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 - thanh tung cao ung huong ((dan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh tung cao ung huong ((dan toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh tung cao ung huong ((dan toan) or (dan than)) cau*.